/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/Problem17_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:23:41,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:23:41,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:23:41,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:23:41,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:23:41,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:23:41,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:23:41,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:23:41,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:23:41,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:23:41,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:23:41,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:23:41,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:23:41,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:23:41,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:23:41,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:23:41,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:23:41,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:23:41,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:23:41,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:23:41,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:23:41,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:23:41,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:23:41,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:23:41,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:23:41,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:23:41,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:23:41,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:23:41,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:23:41,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:23:41,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:23:41,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:23:41,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:23:41,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:23:41,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:23:41,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:23:41,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:23:41,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:23:41,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:23:41,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:23:41,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:23:41,966 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 22:23:42,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:23:42,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:23:42,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:23:42,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:23:42,007 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:23:42,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:23:42,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:23:42,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:23:42,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:23:42,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:23:42,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:23:42,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:23:42,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:23:42,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:23:42,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:23:42,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:23:42,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:23:42,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:23:42,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:23:42,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:23:42,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:23:42,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:42,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:23:42,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:23:42,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:23:42,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:23:42,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:23:42,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:23:42,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:23:42,013 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 22:23:42,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:23:42,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:23:42,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:23:42,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:23:42,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:23:42,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-14 22:23:42,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738a03a3c/462e5a01b3b34eb4a58d98d998082cca/FLAG401ff46ff [2020-10-14 22:23:43,102 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:23:43,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-14 22:23:43,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738a03a3c/462e5a01b3b34eb4a58d98d998082cca/FLAG401ff46ff [2020-10-14 22:23:43,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/738a03a3c/462e5a01b3b34eb4a58d98d998082cca [2020-10-14 22:23:43,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:23:43,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:23:43,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:43,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:23:43,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:23:43,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:43" (1/1) ... [2020-10-14 22:23:43,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:43, skipping insertion in model container [2020-10-14 22:23:43,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:43" (1/1) ... [2020-10-14 22:23:43,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:23:43,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:23:44,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:44,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:23:44,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:44,978 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:23:44,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44 WrapperNode [2020-10-14 22:23:44,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:44,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:23:44,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:23:44,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:23:44,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:44,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (1/1) ... [2020-10-14 22:23:45,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:23:45,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:23:45,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:23:45,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:23:45,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (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 22:23:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:23:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:23:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:23:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:23:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:23:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:23:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:23:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:23:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:23:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:23:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:23:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:23:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:23:51,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:23:51,845 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:23:51,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:51 BoogieIcfgContainer [2020-10-14 22:23:51,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:23:51,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:23:51,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:23:51,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:23:51,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:43" (1/3) ... [2020-10-14 22:23:51,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57151d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:51, skipping insertion in model container [2020-10-14 22:23:51,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:44" (2/3) ... [2020-10-14 22:23:51,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57151d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:51, skipping insertion in model container [2020-10-14 22:23:51,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:51" (3/3) ... [2020-10-14 22:23:51,877 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2020-10-14 22:23:51,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:23:51,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:23:51,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:23:51,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:23:51,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:23:51,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:23:51,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:23:51,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:23:51,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:23:51,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:23:51,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:23:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:23:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 22:23:52,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:52,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:23:52,021 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:52,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2014281761, now seen corresponding path program 1 times [2020-10-14 22:23:52,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:52,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189670480] [2020-10-14 22:23:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 22:23:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 22:23:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:52,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:23:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 22:23:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:23:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:52,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:52,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:52,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:23:52,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:52,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:52,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:52,798 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 22:23:52,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189670480] [2020-10-14 22:23:52,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:23:52,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:23:52,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914378634] [2020-10-14 22:23:52,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:23:52,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:52,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:23:52,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:23:52,830 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:24:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:00,954 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:24:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:24:00,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 22:24:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:00,990 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:24:00,991 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:24:01,000 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 22:24:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:24:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:24:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:24:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:24:01,120 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 37 [2020-10-14 22:24:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:01,121 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:24:01,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:24:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:24:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 22:24:01,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:01,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:01,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:24:01,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash 607875575, now seen corresponding path program 1 times [2020-10-14 22:24:01,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:01,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886498283] [2020-10-14 22:24:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 22:24:02,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:24:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-14 22:24:02,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:02,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:24:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:24:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:24:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:24:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:02,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:02,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:24:02,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 22:24:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:24:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:24:03,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886498283] [2020-10-14 22:24:03,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:03,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:24:03,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659772938] [2020-10-14 22:24:03,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:24:03,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:24:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:03,012 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:24:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:28,586 INFO L93 Difference]: Finished difference Result 2964 states and 4581 transitions. [2020-10-14 22:24:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:24:28,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 22:24:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:28,599 INFO L225 Difference]: With dead ends: 2964 [2020-10-14 22:24:28,599 INFO L226 Difference]: Without dead ends: 1968 [2020-10-14 22:24:28,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:24:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-10-14 22:24:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1935. [2020-10-14 22:24:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-14 22:24:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2603 transitions. [2020-10-14 22:24:28,666 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2603 transitions. Word has length 108 [2020-10-14 22:24:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 1935 states and 2603 transitions. [2020-10-14 22:24:28,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:24:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2603 transitions. [2020-10-14 22:24:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 22:24:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:28,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:28,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:24:28,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1732201911, now seen corresponding path program 1 times [2020-10-14 22:24:28,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:28,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337181256] [2020-10-14 22:24:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:29,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:29,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:24:29,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-14 22:24:29,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:29,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:24:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:24:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:24:29,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:29,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:29,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:24:29,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 22:24:29,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:29,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:24:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:24:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:24:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:30,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337181256] [2020-10-14 22:24:30,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:30,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:24:30,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371218804] [2020-10-14 22:24:30,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:24:30,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:24:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:24:30,194 INFO L87 Difference]: Start difference. First operand 1935 states and 2603 transitions. Second operand 8 states. [2020-10-14 22:24:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:47,277 INFO L93 Difference]: Finished difference Result 4341 states and 5719 transitions. [2020-10-14 22:24:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:24:47,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-14 22:24:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:47,290 INFO L225 Difference]: With dead ends: 4341 [2020-10-14 22:24:47,290 INFO L226 Difference]: Without dead ends: 2378 [2020-10-14 22:24:47,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:24:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2020-10-14 22:24:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2373. [2020-10-14 22:24:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 22:24:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3055 transitions. [2020-10-14 22:24:47,353 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3055 transitions. Word has length 111 [2020-10-14 22:24:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:47,354 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3055 transitions. [2020-10-14 22:24:47,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:24:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3055 transitions. [2020-10-14 22:24:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 22:24:47,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:47,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:47,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:24:47,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:47,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:47,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1750709353, now seen corresponding path program 1 times [2020-10-14 22:24:47,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:47,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993786135] [2020-10-14 22:24:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 22:24:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 22:24:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:24:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 22:24:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:47,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:47,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:24:47,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:47,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:24:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:24:47,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:24:47,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:24:47,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:47,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:24:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:48,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993786135] [2020-10-14 22:24:48,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:48,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:24:48,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985942070] [2020-10-14 22:24:48,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:24:48,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:24:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:24:48,011 INFO L87 Difference]: Start difference. First operand 2373 states and 3055 transitions. Second operand 5 states. [2020-10-14 22:25:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:03,625 INFO L93 Difference]: Finished difference Result 6099 states and 8158 transitions. [2020-10-14 22:25:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:25:03,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 22:25:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:03,650 INFO L225 Difference]: With dead ends: 6099 [2020-10-14 22:25:03,650 INFO L226 Difference]: Without dead ends: 4165 [2020-10-14 22:25:03,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:25:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2020-10-14 22:25:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4159. [2020-10-14 22:25:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2020-10-14 22:25:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5244 transitions. [2020-10-14 22:25:03,778 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5244 transitions. Word has length 124 [2020-10-14 22:25:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:03,781 INFO L479 AbstractCegarLoop]: Abstraction has 4159 states and 5244 transitions. [2020-10-14 22:25:03,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:25:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5244 transitions. [2020-10-14 22:25:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 22:25:03,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:03,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:03,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:25:03,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1807852993, now seen corresponding path program 1 times [2020-10-14 22:25:03,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:03,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729162735] [2020-10-14 22:25:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:03,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 22:25:05,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-14 22:25:05,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:25:05,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:25:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:25:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:25:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:25:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 22:25:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:25:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:05,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729162735] [2020-10-14 22:25:05,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:05,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:25:05,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914520034] [2020-10-14 22:25:05,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:25:05,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:05,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:25:05,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:05,769 INFO L87 Difference]: Start difference. First operand 4159 states and 5244 transitions. Second operand 7 states. [2020-10-14 22:25:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:21,233 INFO L93 Difference]: Finished difference Result 9885 states and 13332 transitions. [2020-10-14 22:25:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:25:21,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-10-14 22:25:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:21,278 INFO L225 Difference]: With dead ends: 9885 [2020-10-14 22:25:21,278 INFO L226 Difference]: Without dead ends: 6165 [2020-10-14 22:25:21,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 22:25:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2020-10-14 22:25:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 6063. [2020-10-14 22:25:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6063 states. [2020-10-14 22:25:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 7631 transitions. [2020-10-14 22:25:21,445 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 7631 transitions. Word has length 195 [2020-10-14 22:25:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:21,446 INFO L479 AbstractCegarLoop]: Abstraction has 6063 states and 7631 transitions. [2020-10-14 22:25:21,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:25:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 7631 transitions. [2020-10-14 22:25:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 22:25:21,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:21,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:21,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:25:21,452 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1218572873, now seen corresponding path program 1 times [2020-10-14 22:25:21,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:21,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3928778] [2020-10-14 22:25:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:25:24,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-10-14 22:25:24,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:25:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:25:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:25:24,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:24,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:24,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 22:25:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:25:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:25:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:25,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:25:25,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 22:25:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:25,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:25,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:25,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3928778] [2020-10-14 22:25:25,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:25,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:25:25,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681105103] [2020-10-14 22:25:25,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:25:25,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:25,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:25:25,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:25:25,514 INFO L87 Difference]: Start difference. First operand 6063 states and 7631 transitions. Second operand 10 states. [2020-10-14 22:25:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:49,181 INFO L93 Difference]: Finished difference Result 13011 states and 17145 transitions. [2020-10-14 22:25:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:25:49,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-14 22:25:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:49,216 INFO L225 Difference]: With dead ends: 13011 [2020-10-14 22:25:49,217 INFO L226 Difference]: Without dead ends: 7387 [2020-10-14 22:25:49,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-14 22:25:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2020-10-14 22:25:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7125. [2020-10-14 22:25:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7125 states. [2020-10-14 22:25:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 8958 transitions. [2020-10-14 22:25:49,406 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 8958 transitions. Word has length 199 [2020-10-14 22:25:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:49,407 INFO L479 AbstractCegarLoop]: Abstraction has 7125 states and 8958 transitions. [2020-10-14 22:25:49,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:25:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 8958 transitions. [2020-10-14 22:25:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 22:25:49,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:49,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:25:49,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:25:49,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:49,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1162013826, now seen corresponding path program 1 times [2020-10-14 22:25:49,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:49,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913064155] [2020-10-14 22:25:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 22:25:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4663 [2020-10-14 22:25:54,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:25:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:54,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:25:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:54,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 22:25:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:54,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:54,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:54,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 22:25:54,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:54,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:25:54,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:25:54,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913064155] [2020-10-14 22:25:54,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:54,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:25:54,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695873255] [2020-10-14 22:25:54,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:25:54,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:54,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:25:54,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:25:54,725 INFO L87 Difference]: Start difference. First operand 7125 states and 8958 transitions. Second operand 5 states. [2020-10-14 22:26:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:08,857 INFO L93 Difference]: Finished difference Result 14262 states and 18477 transitions. [2020-10-14 22:26:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:08,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 22:26:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:08,908 INFO L225 Difference]: With dead ends: 14262 [2020-10-14 22:26:08,908 INFO L226 Difference]: Without dead ends: 7581 [2020-10-14 22:26:08,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:26:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2020-10-14 22:26:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7560. [2020-10-14 22:26:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7560 states. [2020-10-14 22:26:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7560 states to 7560 states and 9677 transitions. [2020-10-14 22:26:09,091 INFO L78 Accepts]: Start accepts. Automaton has 7560 states and 9677 transitions. Word has length 210 [2020-10-14 22:26:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:09,092 INFO L479 AbstractCegarLoop]: Abstraction has 7560 states and 9677 transitions. [2020-10-14 22:26:09,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:26:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7560 states and 9677 transitions. [2020-10-14 22:26:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 22:26:09,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:09,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:26:09,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:26:09,098 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash 858629378, now seen corresponding path program 1 times [2020-10-14 22:26:09,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:09,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177842597] [2020-10-14 22:26:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 22:26:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:26:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 22:26:14,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:14,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:26:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 22:26:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:26:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:14,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:14,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:26:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 22:26:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:14,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:26:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:26:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:14,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:26:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 22:26:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:15,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:26:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 22:26:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177842597] [2020-10-14 22:26:15,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:26:15,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:26:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109426296] [2020-10-14 22:26:15,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:26:15,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:26:15,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:26:15,221 INFO L87 Difference]: Start difference. First operand 7560 states and 9677 transitions. Second operand 8 states. [2020-10-14 22:26:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:36,353 INFO L93 Difference]: Finished difference Result 17140 states and 23191 transitions. [2020-10-14 22:26:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:26:36,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-14 22:26:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:36,389 INFO L225 Difference]: With dead ends: 17140 [2020-10-14 22:26:36,389 INFO L226 Difference]: Without dead ends: 10021 [2020-10-14 22:26:36,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:26:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2020-10-14 22:26:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 8105. [2020-10-14 22:26:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8105 states. [2020-10-14 22:26:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8105 states to 8105 states and 9851 transitions. [2020-10-14 22:26:36,576 INFO L78 Accepts]: Start accepts. Automaton has 8105 states and 9851 transitions. Word has length 223 [2020-10-14 22:26:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:36,577 INFO L479 AbstractCegarLoop]: Abstraction has 8105 states and 9851 transitions. [2020-10-14 22:26:36,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:26:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8105 states and 9851 transitions. [2020-10-14 22:26:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 22:26:36,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:36,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:36,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:26:36,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:36,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:36,588 INFO L82 PathProgramCache]: Analyzing trace with hash 401486842, now seen corresponding path program 1 times [2020-10-14 22:26:36,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:36,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041484046] [2020-10-14 22:26:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 22:26:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-14 22:26:38,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:26:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:26:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:26:38,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:26:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:38,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:26:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:26:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:26:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:26:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 22:26:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:26:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:26:38,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041484046] [2020-10-14 22:26:38,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:38,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:38,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084446721] [2020-10-14 22:26:38,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:38,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:38,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:38,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:38,716 INFO L87 Difference]: Start difference. First operand 8105 states and 9851 transitions. Second operand 7 states. [2020-10-14 22:27:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:00,590 INFO L93 Difference]: Finished difference Result 18615 states and 23581 transitions. [2020-10-14 22:27:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:27:00,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 22:27:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:00,626 INFO L225 Difference]: With dead ends: 18615 [2020-10-14 22:27:00,627 INFO L226 Difference]: Without dead ends: 11396 [2020-10-14 22:27:00,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:27:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11396 states. [2020-10-14 22:27:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11396 to 10414. [2020-10-14 22:27:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10414 states. [2020-10-14 22:27:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10414 states to 10414 states and 13204 transitions. [2020-10-14 22:27:00,861 INFO L78 Accepts]: Start accepts. Automaton has 10414 states and 13204 transitions. Word has length 281 [2020-10-14 22:27:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:00,861 INFO L479 AbstractCegarLoop]: Abstraction has 10414 states and 13204 transitions. [2020-10-14 22:27:00,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10414 states and 13204 transitions. [2020-10-14 22:27:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 22:27:00,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:00,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:00,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:27:00,868 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:00,869 INFO L82 PathProgramCache]: Analyzing trace with hash -755319806, now seen corresponding path program 1 times [2020-10-14 22:27:00,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:00,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586645542] [2020-10-14 22:27:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 22:27:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:27:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3617 [2020-10-14 22:27:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:04,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:27:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:27:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:27:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:04,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:04,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 22:27:04,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:27:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:05,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:27:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:27:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:05,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:27:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:27:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:05,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:27:05,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:27:05,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:05,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:27:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:27:05,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586645542] [2020-10-14 22:27:05,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:05,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:27:05,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257733835] [2020-10-14 22:27:05,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:27:05,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:05,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:27:05,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:27:05,458 INFO L87 Difference]: Start difference. First operand 10414 states and 13204 transitions. Second operand 9 states.