/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:04:41,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:04:41,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:04:41,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:04:41,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:04:41,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:04:41,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:04:41,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:04:41,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:04:41,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:04:41,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:04:41,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:04:41,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:04:41,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:04:41,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:04:41,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:04:41,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:04:41,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:04:41,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:04:41,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:04:41,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:04:41,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:04:41,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:04:41,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:04:41,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:04:41,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:04:41,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:04:41,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:04:41,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:04:41,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:04:41,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:04:41,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:04:41,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:04:41,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:04:41,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:04:41,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:04:41,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:04:41,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:04:41,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:04:41,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:04:41,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:04:41,884 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 22:04:41,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:04:41,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:04:41,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:04:41,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:04:41,911 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:04:41,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:04:41,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:04:41,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:04:41,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:04:41,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:04:41,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:04:41,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:04:41,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:04:41,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:04:41,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:04:41,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:04:41,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:04:41,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:04:41,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:04:41,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:04:41,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:04:41,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:04:41,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:04:41,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:04:41,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:04:41,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:04:41,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:04:41,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:04:41,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:04:41,916 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 22:04:42,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:04:42,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:04:42,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:04:42,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:04:42,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:04:42,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-14 22:04:42,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d981f12d1/fba5a3af5ae843228c70bddc299cdf75/FLAG07603f02f [2020-10-14 22:04:43,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:04:43,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label50.c [2020-10-14 22:04:43,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d981f12d1/fba5a3af5ae843228c70bddc299cdf75/FLAG07603f02f [2020-10-14 22:04:43,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d981f12d1/fba5a3af5ae843228c70bddc299cdf75 [2020-10-14 22:04:43,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:04:43,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:04:43,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:43,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:04:43,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:04:43,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:43" (1/1) ... [2020-10-14 22:04:43,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:43, skipping insertion in model container [2020-10-14 22:04:43,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:43" (1/1) ... [2020-10-14 22:04:43,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:04:43,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:04:44,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:44,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:04:44,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:44,957 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:04:44,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44 WrapperNode [2020-10-14 22:04:44,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:44,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:04:44,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:04:44,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:04:44,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:44,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (1/1) ... [2020-10-14 22:04:45,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:04:45,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:04:45,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:04:45,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:04:45,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (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 22:04:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:04:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:04:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:04:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:04:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:04:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:04:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:04:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:04:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:04:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:04:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:04:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:04:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:04:52,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:04:52,411 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:04:52,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:52 BoogieIcfgContainer [2020-10-14 22:04:52,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:04:52,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:04:52,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:04:52,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:04:52,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:43" (1/3) ... [2020-10-14 22:04:52,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11495cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:52, skipping insertion in model container [2020-10-14 22:04:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:44" (2/3) ... [2020-10-14 22:04:52,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11495cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:52, skipping insertion in model container [2020-10-14 22:04:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:52" (3/3) ... [2020-10-14 22:04:52,443 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label50.c [2020-10-14 22:04:52,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:04:52,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:04:52,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:04:52,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:04:52,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:04:52,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:04:52,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:04:52,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:04:52,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:04:52,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:04:52,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:04:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:04:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 22:04:52,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:52,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:52,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:52,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983280, now seen corresponding path program 1 times [2020-10-14 22:04:52,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:52,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495318092] [2020-10-14 22:04:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 22:04:53,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-14 22:04:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 22:04:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:04:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:53,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:04:53,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:53,283 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 22:04:53,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495318092] [2020-10-14 22:04:53,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:04:53,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:04:53,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413606917] [2020-10-14 22:04:53,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:04:53,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:53,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:04:53,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:04:53,312 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:05:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:01,714 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 22:05:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:05:01,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 22:05:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:01,747 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 22:05:01,748 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 22:05:01,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:05:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 22:05:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 22:05:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 22:05:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 22:05:01,895 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 18 [2020-10-14 22:05:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:01,896 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 22:05:01,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:05:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 22:05:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 22:05:01,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:01,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:01,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:05:01,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -629755948, now seen corresponding path program 1 times [2020-10-14 22:05:01,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:01,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431956215] [2020-10-14 22:05:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:05:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-14 22:05:03,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:03,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:05:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:05:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:03,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:05:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:05:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:05:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 22:05:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:03,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:05:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:05:03,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431956215] [2020-10-14 22:05:03,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:05:03,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:05:03,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633156023] [2020-10-14 22:05:03,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:03,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:03,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:03,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:03,972 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 22:05:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:13,845 INFO L93 Difference]: Finished difference Result 2033 states and 2992 transitions. [2020-10-14 22:05:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:05:13,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-14 22:05:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:13,858 INFO L225 Difference]: With dead ends: 2033 [2020-10-14 22:05:13,858 INFO L226 Difference]: Without dead ends: 1348 [2020-10-14 22:05:13,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:05:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-10-14 22:05:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1324. [2020-10-14 22:05:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-14 22:05:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1716 transitions. [2020-10-14 22:05:13,927 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1716 transitions. Word has length 87 [2020-10-14 22:05:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:13,927 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 1716 transitions. [2020-10-14 22:05:13,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1716 transitions. [2020-10-14 22:05:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 22:05:13,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:13,936 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 22:05:13,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:05:13,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:13,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1951912439, now seen corresponding path program 1 times [2020-10-14 22:05:13,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:13,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528366359] [2020-10-14 22:05:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:19,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:19,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 22:05:19,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:05:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 22:05:19,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:19,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:05:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 22:05:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:19,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:19,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:19,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:05:19,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:19,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:05:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:19,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:19,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 22:05:19,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:19,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:05:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:19,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:05:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 22:05:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:19,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:05:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:05:19,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528366359] [2020-10-14 22:05:19,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:19,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:05:19,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86129664] [2020-10-14 22:05:19,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:19,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:19,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:19,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:19,895 INFO L87 Difference]: Start difference. First operand 1324 states and 1716 transitions. Second operand 7 states. [2020-10-14 22:05:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:27,412 INFO L93 Difference]: Finished difference Result 3933 states and 5104 transitions. [2020-10-14 22:05:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:05:27,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 22:05:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:27,438 INFO L225 Difference]: With dead ends: 3933 [2020-10-14 22:05:27,438 INFO L226 Difference]: Without dead ends: 2615 [2020-10-14 22:05:27,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:05:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2020-10-14 22:05:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2576. [2020-10-14 22:05:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2020-10-14 22:05:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3113 transitions. [2020-10-14 22:05:27,569 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3113 transitions. Word has length 192 [2020-10-14 22:05:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:27,575 INFO L479 AbstractCegarLoop]: Abstraction has 2576 states and 3113 transitions. [2020-10-14 22:05:27,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3113 transitions. [2020-10-14 22:05:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 22:05:27,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:27,592 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:27,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:05:27,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1913542295, now seen corresponding path program 1 times [2020-10-14 22:05:27,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:27,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636830455] [2020-10-14 22:05:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:05:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:32,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:32,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:32,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:05:32,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:32,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 22:05:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:33,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:05:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:05:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:05:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:05:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:05:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:05:34,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636830455] [2020-10-14 22:05:34,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:34,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:05:34,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085118351] [2020-10-14 22:05:34,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:34,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:34,239 INFO L87 Difference]: Start difference. First operand 2576 states and 3113 transitions. Second operand 8 states. [2020-10-14 22:05:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:42,304 INFO L93 Difference]: Finished difference Result 4910 states and 5989 transitions. [2020-10-14 22:05:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:05:42,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-14 22:05:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:42,319 INFO L225 Difference]: With dead ends: 4910 [2020-10-14 22:05:42,319 INFO L226 Difference]: Without dead ends: 2647 [2020-10-14 22:05:42,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:05:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2020-10-14 22:05:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2578. [2020-10-14 22:05:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-10-14 22:05:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3111 transitions. [2020-10-14 22:05:42,392 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3111 transitions. Word has length 298 [2020-10-14 22:05:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:42,393 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 3111 transitions. [2020-10-14 22:05:42,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3111 transitions. [2020-10-14 22:05:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 22:05:42,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:42,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:42,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:05:42,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash -300295218, now seen corresponding path program 1 times [2020-10-14 22:05:42,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:42,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495842461] [2020-10-14 22:05:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:42,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 22:05:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:05:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2670 [2020-10-14 22:05:45,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:45,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:05:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-14 22:05:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:45,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:05:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:45,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:45,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 22:05:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:05:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:46,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:05:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 22:05:46,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495842461] [2020-10-14 22:05:46,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:46,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:46,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47313858] [2020-10-14 22:05:46,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:46,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:46,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:46,442 INFO L87 Difference]: Start difference. First operand 2578 states and 3111 transitions. Second operand 7 states. [2020-10-14 22:05:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:58,474 INFO L93 Difference]: Finished difference Result 5491 states and 7094 transitions. [2020-10-14 22:05:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:05:58,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-14 22:05:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:58,493 INFO L225 Difference]: With dead ends: 5491 [2020-10-14 22:05:58,494 INFO L226 Difference]: Without dead ends: 4166 [2020-10-14 22:05:58,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:05:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2020-10-14 22:05:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3520. [2020-10-14 22:05:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2020-10-14 22:05:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4434 transitions. [2020-10-14 22:05:58,583 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4434 transitions. Word has length 313 [2020-10-14 22:05:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:58,584 INFO L479 AbstractCegarLoop]: Abstraction has 3520 states and 4434 transitions. [2020-10-14 22:05:58,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4434 transitions. [2020-10-14 22:05:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 22:05:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:58,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:58,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:05:58,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 438392263, now seen corresponding path program 1 times [2020-10-14 22:05:58,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:58,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649762865] [2020-10-14 22:05:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-14 22:06:00,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1822 [2020-10-14 22:06:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:06:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:00,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:00,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:01,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:01,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:06:01,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:01,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:06:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:06:01,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649762865] [2020-10-14 22:06:01,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:01,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:01,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216095179] [2020-10-14 22:06:01,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:01,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:01,295 INFO L87 Difference]: Start difference. First operand 3520 states and 4434 transitions. Second operand 7 states. [2020-10-14 22:06:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:10,414 INFO L93 Difference]: Finished difference Result 8700 states and 11438 transitions. [2020-10-14 22:06:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:10,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-14 22:06:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:10,441 INFO L225 Difference]: With dead ends: 8700 [2020-10-14 22:06:10,441 INFO L226 Difference]: Without dead ends: 5493 [2020-10-14 22:06:10,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2020-10-14 22:06:10,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5453. [2020-10-14 22:06:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2020-10-14 22:06:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 6655 transitions. [2020-10-14 22:06:10,579 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 6655 transitions. Word has length 388 [2020-10-14 22:06:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:10,580 INFO L479 AbstractCegarLoop]: Abstraction has 5453 states and 6655 transitions. [2020-10-14 22:06:10,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 6655 transitions. [2020-10-14 22:06:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-14 22:06:10,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:10,588 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:10,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:06:10,588 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:10,589 INFO L82 PathProgramCache]: Analyzing trace with hash -36105774, now seen corresponding path program 1 times [2020-10-14 22:06:10,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:10,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592163564] [2020-10-14 22:06:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-14 22:06:14,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:06:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3397 [2020-10-14 22:06:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:06:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:06:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:14,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:06:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:06:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:14,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:06:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:06:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:06:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:06:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 217 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 22:06:14,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592163564] [2020-10-14 22:06:14,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:14,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:14,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056518641] [2020-10-14 22:06:14,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:14,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:14,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:14,959 INFO L87 Difference]: Start difference. First operand 5453 states and 6655 transitions. Second operand 7 states. [2020-10-14 22:06:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:30,288 INFO L93 Difference]: Finished difference Result 11293 states and 14207 transitions. [2020-10-14 22:06:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:06:30,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-14 22:06:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:30,318 INFO L225 Difference]: With dead ends: 11293 [2020-10-14 22:06:30,318 INFO L226 Difference]: Without dead ends: 6457 [2020-10-14 22:06:30,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 22:06:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2020-10-14 22:06:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6441. [2020-10-14 22:06:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6441 states. [2020-10-14 22:06:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 7756 transitions. [2020-10-14 22:06:30,484 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 7756 transitions. Word has length 409 [2020-10-14 22:06:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:30,484 INFO L479 AbstractCegarLoop]: Abstraction has 6441 states and 7756 transitions. [2020-10-14 22:06:30,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 7756 transitions. [2020-10-14 22:06:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-14 22:06:30,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:30,496 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:30,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:06:30,497 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1119323058, now seen corresponding path program 1 times [2020-10-14 22:06:30,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:30,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356769679] [2020-10-14 22:06:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3888 [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:06:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:06:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:34,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:34,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:34,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:34,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:34,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:34,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:06:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:06:35,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356769679] [2020-10-14 22:06:35,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:35,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:35,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303871314] [2020-10-14 22:06:35,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:35,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:35,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:35,129 INFO L87 Difference]: Start difference. First operand 6441 states and 7756 transitions. Second operand 7 states. [2020-10-14 22:06:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:45,691 INFO L93 Difference]: Finished difference Result 14840 states and 18596 transitions. [2020-10-14 22:06:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:06:45,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-14 22:06:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:45,726 INFO L225 Difference]: With dead ends: 14840 [2020-10-14 22:06:45,726 INFO L226 Difference]: Without dead ends: 8712 [2020-10-14 22:06:45,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 22:06:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2020-10-14 22:06:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 8366. [2020-10-14 22:06:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8366 states. [2020-10-14 22:06:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8366 states to 8366 states and 9897 transitions. [2020-10-14 22:06:45,942 INFO L78 Accepts]: Start accepts. Automaton has 8366 states and 9897 transitions. Word has length 496 [2020-10-14 22:06:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:45,943 INFO L479 AbstractCegarLoop]: Abstraction has 8366 states and 9897 transitions. [2020-10-14 22:06:45,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8366 states and 9897 transitions. [2020-10-14 22:06:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 22:06:45,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:45,957 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:45,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:06:45,957 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:45,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2039398889, now seen corresponding path program 1 times [2020-10-14 22:06:45,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:45,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927230518] [2020-10-14 22:06:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 22:06:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:06:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:06:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:06:49,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:50,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:50,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:50,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 22:06:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:50,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:50,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:06:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:50,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:06:50,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 145 proven. 100 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 22:06:50,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927230518] [2020-10-14 22:06:50,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:50,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:06:50,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207744853] [2020-10-14 22:06:50,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:06:50,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:06:50,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:06:50,880 INFO L87 Difference]: Start difference. First operand 8366 states and 9897 transitions. Second operand 8 states. [2020-10-14 22:07:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:01,029 INFO L93 Difference]: Finished difference Result 18975 states and 22433 transitions. [2020-10-14 22:07:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:07:01,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 504 [2020-10-14 22:07:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:01,068 INFO L225 Difference]: With dead ends: 18975 [2020-10-14 22:07:01,069 INFO L226 Difference]: Without dead ends: 10922 [2020-10-14 22:07:01,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:07:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10922 states. [2020-10-14 22:07:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10922 to 10576. [2020-10-14 22:07:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10576 states. [2020-10-14 22:07:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10576 states to 10576 states and 12315 transitions. [2020-10-14 22:07:01,339 INFO L78 Accepts]: Start accepts. Automaton has 10576 states and 12315 transitions. Word has length 504 [2020-10-14 22:07:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:01,340 INFO L479 AbstractCegarLoop]: Abstraction has 10576 states and 12315 transitions. [2020-10-14 22:07:01,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:07:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10576 states and 12315 transitions. [2020-10-14 22:07:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-14 22:07:01,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:01,347 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:01,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:07:01,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:01,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:01,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037473, now seen corresponding path program 1 times [2020-10-14 22:07:01,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:01,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805121475] [2020-10-14 22:07:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:02,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 22:07:02,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:07:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:07:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:03,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:03,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:03,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:07:03,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:03,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:03,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:07:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:07:03,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:07:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:07:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:07:03,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805121475] [2020-10-14 22:07:03,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:03,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:03,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661351949] [2020-10-14 22:07:03,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:03,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:03,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:03,644 INFO L87 Difference]: Start difference. First operand 10576 states and 12315 transitions. Second operand 7 states. [2020-10-14 22:07:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:19,147 INFO L93 Difference]: Finished difference Result 19676 states and 24231 transitions. [2020-10-14 22:07:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:07:19,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-14 22:07:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:19,198 INFO L225 Difference]: With dead ends: 19676 [2020-10-14 22:07:19,199 INFO L226 Difference]: Without dead ends: 12519 [2020-10-14 22:07:19,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 22:07:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2020-10-14 22:07:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 11865. [2020-10-14 22:07:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11865 states. [2020-10-14 22:07:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 13972 transitions. [2020-10-14 22:07:19,542 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 13972 transitions. Word has length 516 [2020-10-14 22:07:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:19,543 INFO L479 AbstractCegarLoop]: Abstraction has 11865 states and 13972 transitions. [2020-10-14 22:07:19,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:19,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 13972 transitions. [2020-10-14 22:07:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-14 22:07:19,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:19,559 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:19,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:07:19,560 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:19,560 INFO L82 PathProgramCache]: Analyzing trace with hash 668207416, now seen corresponding path program 1 times [2020-10-14 22:07:19,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:19,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213715981] [2020-10-14 22:07:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-14 22:07:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:07:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2919 [2020-10-14 22:07:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:22,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:07:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:07:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:07:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:22,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:07:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:22,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:23,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:07:23,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:23,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:07:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:23,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:23,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:07:23,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 22:07:23,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:23,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:07:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:07:23,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213715981] [2020-10-14 22:07:23,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:23,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:23,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650415607] [2020-10-14 22:07:23,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:23,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:23,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:23,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:23,786 INFO L87 Difference]: Start difference. First operand 11865 states and 13972 transitions. Second operand 7 states. [2020-10-14 22:07:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:39,757 INFO L93 Difference]: Finished difference Result 24048 states and 29725 transitions. [2020-10-14 22:07:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:07:39,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 543 [2020-10-14 22:07:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:39,804 INFO L225 Difference]: With dead ends: 24048 [2020-10-14 22:07:39,805 INFO L226 Difference]: Without dead ends: 15602 [2020-10-14 22:07:39,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 22:07:39,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2020-10-14 22:07:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 14980. [2020-10-14 22:07:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14980 states. [2020-10-14 22:07:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14980 states to 14980 states and 18219 transitions. [2020-10-14 22:07:40,113 INFO L78 Accepts]: Start accepts. Automaton has 14980 states and 18219 transitions. Word has length 543 [2020-10-14 22:07:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:40,114 INFO L479 AbstractCegarLoop]: Abstraction has 14980 states and 18219 transitions. [2020-10-14 22:07:40,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14980 states and 18219 transitions. [2020-10-14 22:07:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-14 22:07:40,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:40,123 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:40,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:07:40,124 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash -292036047, now seen corresponding path program 1 times [2020-10-14 22:07:40,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:40,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101190820] [2020-10-14 22:07:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:07:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:07:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:07:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:41,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:07:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:41,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 22:07:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:41,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:07:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:07:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 22:07:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 391 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:07:42,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101190820] [2020-10-14 22:07:42,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:42,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:07:42,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324060] [2020-10-14 22:07:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:07:42,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:42,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:07:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:07:42,896 INFO L87 Difference]: Start difference. First operand 14980 states and 18219 transitions. Second operand 10 states. [2020-10-14 22:08:01,544 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-14 22:08:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:02,632 INFO L93 Difference]: Finished difference Result 27604 states and 34196 transitions. [2020-10-14 22:08:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 22:08:02,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 564 [2020-10-14 22:08:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:02,679 INFO L225 Difference]: With dead ends: 27604 [2020-10-14 22:08:02,679 INFO L226 Difference]: Without dead ends: 16043 [2020-10-14 22:08:02,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-14 22:08:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16043 states. [2020-10-14 22:08:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16043 to 15976. [2020-10-14 22:08:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15976 states. [2020-10-14 22:08:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15976 states to 15976 states and 19337 transitions. [2020-10-14 22:08:03,069 INFO L78 Accepts]: Start accepts. Automaton has 15976 states and 19337 transitions. Word has length 564 [2020-10-14 22:08:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:03,070 INFO L479 AbstractCegarLoop]: Abstraction has 15976 states and 19337 transitions. [2020-10-14 22:08:03,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:08:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15976 states and 19337 transitions. [2020-10-14 22:08:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-10-14 22:08:03,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:03,197 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:03,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:08:03,197 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:03,198 INFO L82 PathProgramCache]: Analyzing trace with hash 915155892, now seen corresponding path program 1 times [2020-10-14 22:08:03,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:03,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490694981] [2020-10-14 22:08:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:08:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:05,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:05,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:05,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:05,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:08:05,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:05,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:05,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:08:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 22:08:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:08:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:05,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:08:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:08:05,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:05,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:08:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 22:08:05,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490694981] [2020-10-14 22:08:05,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:05,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:08:05,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565678288] [2020-10-14 22:08:05,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:05,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:05,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:05,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:05,824 INFO L87 Difference]: Start difference. First operand 15976 states and 19337 transitions. Second operand 7 states. [2020-10-14 22:08:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:16,314 INFO L93 Difference]: Finished difference Result 34779 states and 43437 transitions. [2020-10-14 22:08:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:08:16,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 593 [2020-10-14 22:08:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:16,392 INFO L225 Difference]: With dead ends: 34779 [2020-10-14 22:08:16,392 INFO L226 Difference]: Without dead ends: 19116 [2020-10-14 22:08:16,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:08:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19116 states. [2020-10-14 22:08:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19116 to 19102. [2020-10-14 22:08:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19102 states. [2020-10-14 22:08:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19102 states to 19102 states and 23974 transitions. [2020-10-14 22:08:16,946 INFO L78 Accepts]: Start accepts. Automaton has 19102 states and 23974 transitions. Word has length 593 [2020-10-14 22:08:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:16,948 INFO L479 AbstractCegarLoop]: Abstraction has 19102 states and 23974 transitions. [2020-10-14 22:08:16,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 19102 states and 23974 transitions. [2020-10-14 22:08:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-14 22:08:16,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:16,983 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:08:16,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:08:16,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:16,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1580046720, now seen corresponding path program 1 times [2020-10-14 22:08:16,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:16,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901049301] [2020-10-14 22:08:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:19,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:19,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-14 22:08:19,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:08:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:19,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:19,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:19,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:19,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:08:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:19,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:20,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 22:08:20,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:20,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 22:08:20,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:20,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 22:08:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:20,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-14 22:08:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:20,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:08:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-14 22:08:20,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901049301] [2020-10-14 22:08:20,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:20,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:08:20,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823988113] [2020-10-14 22:08:20,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:20,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:20,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:20,679 INFO L87 Difference]: Start difference. First operand 19102 states and 23974 transitions. Second operand 7 states.