/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:04:53,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:04:53,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:04:53,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:04:53,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:04:53,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:04:53,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:04:53,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:04:53,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:04:53,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:04:53,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:04:53,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:04:53,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:04:53,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:04:53,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:04:53,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:04:53,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:04:53,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:04:53,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:04:53,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:04:53,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:04:53,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:04:53,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:04:53,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:04:53,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:04:53,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:04:53,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:04:53,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:04:53,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:04:53,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:04:53,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:04:53,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:04:53,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:04:53,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:04:53,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:04:53,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:04:53,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:04:53,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:04:53,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:04:53,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:04:53,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:04:53,992 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 03:04:54,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:04:54,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:04:54,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:04:54,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:04:54,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:04:54,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:04:54,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:04:54,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:04:54,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:04:54,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:04:54,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:04:54,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:04:54,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:04:54,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:04:54,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:04:54,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:04:54,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:04:54,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:04:54,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:04:54,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:04:54,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:04:54,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:04:54,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:04:54,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:04:54,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:04:54,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:04:54,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:04:54,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:04:54,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:04:54,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:04:54,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:04:54,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:04:54,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:04:54,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:04:54,446 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:04:54,447 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-14 03:04:54,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/259f881ee/1081d0f0bfb148d98f9ef21a316afb12/FLAG0928e2bcb [2020-10-14 03:04:55,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:04:55,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-14 03:04:55,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/259f881ee/1081d0f0bfb148d98f9ef21a316afb12/FLAG0928e2bcb [2020-10-14 03:04:55,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/259f881ee/1081d0f0bfb148d98f9ef21a316afb12 [2020-10-14 03:04:55,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:04:55,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:04:55,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:04:55,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:04:55,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:04:55,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:04:55" (1/1) ... [2020-10-14 03:04:55,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25814f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:55, skipping insertion in model container [2020-10-14 03:04:55,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:04:55" (1/1) ... [2020-10-14 03:04:55,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:04:56,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:04:58,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:04:58,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:04:58,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:04:58,978 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:04:58,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58 WrapperNode [2020-10-14 03:04:58,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:04:58,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:04:58,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:04:58,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:04:58,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (1/1) ... [2020-10-14 03:04:59,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:04:59,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:04:59,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:04:59,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:04:59,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (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 03:04:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:04:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:04:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:04:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:04:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:04:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:04:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:04:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:04:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:04:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:04:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:04:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:04:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:04:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:04:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:04:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:04:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:05:12,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:05:12,088 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:05:12,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:05:12 BoogieIcfgContainer [2020-10-14 03:05:12,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:05:12,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:05:12,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:05:12,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:05:12,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:04:55" (1/3) ... [2020-10-14 03:05:12,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa18a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:05:12, skipping insertion in model container [2020-10-14 03:05:12,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:58" (2/3) ... [2020-10-14 03:05:12,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa18a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:05:12, skipping insertion in model container [2020-10-14 03:05:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:05:12" (3/3) ... [2020-10-14 03:05:12,123 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label29.c [2020-10-14 03:05:12,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:05:12,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:05:12,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:05:12,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:05:12,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:05:12,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:05:12,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:05:12,216 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:05:12,216 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:05:12,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:05:12,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:05:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:05:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 03:05:12,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:12,287 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] [2020-10-14 03:05:12,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:12,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1603055809, now seen corresponding path program 1 times [2020-10-14 03:05:12,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:12,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747702052] [2020-10-14 03:05:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:12,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 03:05:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 03:05:12,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:12,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:05:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:05:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:05:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 03:05:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:13,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:13,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:13,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:13,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:05:13,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:13,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:05:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:13,149 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 03:05:13,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747702052] [2020-10-14 03:05:13,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:05:13,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:05:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230315856] [2020-10-14 03:05:13,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:05:13,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:05:13,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:05:13,188 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:05:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:30,287 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 03:05:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:30,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 03:05:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:30,341 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 03:05:30,341 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:05:30,354 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 03:05:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:05:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 03:05:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 03:05:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 03:05:30,567 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 20 [2020-10-14 03:05:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:30,568 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 03:05:30,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:05:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 03:05:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 03:05:30,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:30,574 INFO L422 BasicCegarLoop]: trace histogram [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 03:05:30,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:05:30,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1222934038, now seen corresponding path program 1 times [2020-10-14 03:05:30,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:30,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307624373] [2020-10-14 03:05:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:31,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:31,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:05:31,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-14 03:05:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:31,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:05:31,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 03:05:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:31,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:31,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:31,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:05:31,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:31,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:32,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:05:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:05:32,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:32,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:05:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:32,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307624373] [2020-10-14 03:05:32,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:32,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:32,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903279820] [2020-10-14 03:05:32,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:32,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:32,089 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 03:05:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:52,771 INFO L93 Difference]: Finished difference Result 3879 states and 6754 transitions. [2020-10-14 03:05:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:52,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 03:05:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:52,793 INFO L225 Difference]: With dead ends: 3879 [2020-10-14 03:05:52,794 INFO L226 Difference]: Without dead ends: 2819 [2020-10-14 03:05:52,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 03:05:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-14 03:05:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2759. [2020-10-14 03:05:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-14 03:05:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4365 transitions. [2020-10-14 03:05:52,895 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4365 transitions. Word has length 90 [2020-10-14 03:05:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:52,897 INFO L479 AbstractCegarLoop]: Abstraction has 2759 states and 4365 transitions. [2020-10-14 03:05:52,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:05:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4365 transitions. [2020-10-14 03:05:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 03:05:52,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:52,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:52,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:05:52,902 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1811228731, now seen corresponding path program 1 times [2020-10-14 03:05:52,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:52,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678224493] [2020-10-14 03:05:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:53,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 03:05:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-10-14 03:05:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:53,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 03:05:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:54,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:54,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:05:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:54,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:54,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:05:54,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:05:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:54,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:05:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:54,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678224493] [2020-10-14 03:05:54,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:54,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:05:54,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200001975] [2020-10-14 03:05:54,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:05:54,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:54,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:05:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:05:54,288 INFO L87 Difference]: Start difference. First operand 2759 states and 4365 transitions. Second operand 6 states. [2020-10-14 03:06:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:27,393 INFO L93 Difference]: Finished difference Result 10487 states and 16908 transitions. [2020-10-14 03:06:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:06:27,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 03:06:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:27,454 INFO L225 Difference]: With dead ends: 10487 [2020-10-14 03:06:27,455 INFO L226 Difference]: Without dead ends: 7734 [2020-10-14 03:06:27,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:06:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2020-10-14 03:06:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7707. [2020-10-14 03:06:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7707 states. [2020-10-14 03:06:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 11387 transitions. [2020-10-14 03:06:27,775 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 11387 transitions. Word has length 95 [2020-10-14 03:06:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:27,778 INFO L479 AbstractCegarLoop]: Abstraction has 7707 states and 11387 transitions. [2020-10-14 03:06:27,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:06:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 11387 transitions. [2020-10-14 03:06:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 03:06:27,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:27,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:27,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:06:27,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2136271063, now seen corresponding path program 1 times [2020-10-14 03:06:27,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:27,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257547847] [2020-10-14 03:06:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 03:06:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:06:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-14 03:06:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:29,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 03:06:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:29,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:29,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:29,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:29,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:29,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:06:29,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:29,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:29,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:30,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:30,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:06:30,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:06:30,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:30,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:06:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:06:30,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257547847] [2020-10-14 03:06:30,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:30,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:06:30,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140108477] [2020-10-14 03:06:30,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:06:30,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:06:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:06:30,101 INFO L87 Difference]: Start difference. First operand 7707 states and 11387 transitions. Second operand 5 states. [2020-10-14 03:06:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:51,175 INFO L93 Difference]: Finished difference Result 21122 states and 32003 transitions. [2020-10-14 03:06:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:51,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 03:06:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:51,248 INFO L225 Difference]: With dead ends: 21122 [2020-10-14 03:06:51,248 INFO L226 Difference]: Without dead ends: 13421 [2020-10-14 03:06:51,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:06:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2020-10-14 03:06:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13416. [2020-10-14 03:06:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13416 states. [2020-10-14 03:06:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 19532 transitions. [2020-10-14 03:06:51,577 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 19532 transitions. Word has length 113 [2020-10-14 03:06:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:51,579 INFO L479 AbstractCegarLoop]: Abstraction has 13416 states and 19532 transitions. [2020-10-14 03:06:51,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 19532 transitions. [2020-10-14 03:06:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 03:06:51,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:51,590 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-14 03:06:51,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:06:51,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash -788854133, now seen corresponding path program 1 times [2020-10-14 03:06:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:51,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880161043] [2020-10-14 03:06:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 03:06:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:06:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 03:06:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:56,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:06:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:06:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:56,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:56,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:06:56,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:56,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:06:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:06:56,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:56,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:06:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:06:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:57,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:06:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:06:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:57,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:06:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:57,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880161043] [2020-10-14 03:06:57,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:57,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:57,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548208676] [2020-10-14 03:06:57,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:57,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:57,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:57,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:57,340 INFO L87 Difference]: Start difference. First operand 13416 states and 19532 transitions. Second operand 7 states. [2020-10-14 03:07:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:20,924 INFO L93 Difference]: Finished difference Result 34482 states and 52908 transitions. [2020-10-14 03:07:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:07:20,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-14 03:07:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:21,022 INFO L225 Difference]: With dead ends: 34482 [2020-10-14 03:07:21,023 INFO L226 Difference]: Without dead ends: 21072 [2020-10-14 03:07:21,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:07:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21072 states. [2020-10-14 03:07:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21072 to 16948. [2020-10-14 03:07:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16948 states. [2020-10-14 03:07:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 24414 transitions. [2020-10-14 03:07:21,572 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 24414 transitions. Word has length 164 [2020-10-14 03:07:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:07:21,573 INFO L479 AbstractCegarLoop]: Abstraction has 16948 states and 24414 transitions. [2020-10-14 03:07:21,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:07:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 24414 transitions. [2020-10-14 03:07:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 03:07:21,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:07:21,578 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:07:21,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:07:21,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:07:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:07:21,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1633711526, now seen corresponding path program 1 times [2020-10-14 03:07:21,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:07:21,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686493309] [2020-10-14 03:07:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:07:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:25,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:25,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 03:07:25,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:07:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3992 [2020-10-14 03:07:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:25,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:07:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:07:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:07:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:25,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:25,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:07:25,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:07:25,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:25,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:07:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:07:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:07:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:07:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:07:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:25,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:07:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:07:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:25,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:07:25,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:07:25,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:25,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:07:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:07:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:07:26,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686493309] [2020-10-14 03:07:26,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:07:26,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:07:26,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886432917] [2020-10-14 03:07:26,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:07:26,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:07:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:07:26,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:07:26,110 INFO L87 Difference]: Start difference. First operand 16948 states and 24414 transitions. Second operand 7 states. [2020-10-14 03:07:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:55,592 INFO L93 Difference]: Finished difference Result 48764 states and 74913 transitions. [2020-10-14 03:07:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:07:55,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-14 03:07:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:55,809 INFO L225 Difference]: With dead ends: 48764 [2020-10-14 03:07:55,809 INFO L226 Difference]: Without dead ends: 32626 [2020-10-14 03:07:55,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:07:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32626 states. [2020-10-14 03:07:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32626 to 32550. [2020-10-14 03:07:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32550 states. [2020-10-14 03:07:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32550 states to 32550 states and 47538 transitions. [2020-10-14 03:07:56,834 INFO L78 Accepts]: Start accepts. Automaton has 32550 states and 47538 transitions. Word has length 179 [2020-10-14 03:07:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:07:56,835 INFO L479 AbstractCegarLoop]: Abstraction has 32550 states and 47538 transitions. [2020-10-14 03:07:56,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:07:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 32550 states and 47538 transitions. [2020-10-14 03:07:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 03:07:56,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:07:56,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:56,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:07:56,840 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:07:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:07:56,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1712784437, now seen corresponding path program 1 times [2020-10-14 03:07:56,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:07:56,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571857776] [2020-10-14 03:07:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:07:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:00,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:00,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 03:08:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:08:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3820 [2020-10-14 03:08:00,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:00,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:08:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:08:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:00,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:00,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:00,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:08:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:00,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:08:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:01,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:01,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:08:01,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 03:08:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:01,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:08:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:01,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:08:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:01,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:01,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:08:01,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:08:01,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:01,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:08:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:08:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:08:01,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571857776] [2020-10-14 03:08:01,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:08:01,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:08:01,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117975770] [2020-10-14 03:08:01,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:08:01,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:01,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:08:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:08:01,402 INFO L87 Difference]: Start difference. First operand 32550 states and 47538 transitions. Second operand 7 states. [2020-10-14 03:08:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:08:32,708 INFO L93 Difference]: Finished difference Result 93008 states and 147096 transitions. [2020-10-14 03:08:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:08:32,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-14 03:08:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:08:33,041 INFO L225 Difference]: With dead ends: 93008 [2020-10-14 03:08:33,041 INFO L226 Difference]: Without dead ends: 61267 [2020-10-14 03:08:33,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:08:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61267 states. [2020-10-14 03:08:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61267 to 61061. [2020-10-14 03:08:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61061 states. [2020-10-14 03:08:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61061 states to 61061 states and 86341 transitions. [2020-10-14 03:08:34,746 INFO L78 Accepts]: Start accepts. Automaton has 61061 states and 86341 transitions. Word has length 184 [2020-10-14 03:08:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:08:34,746 INFO L479 AbstractCegarLoop]: Abstraction has 61061 states and 86341 transitions. [2020-10-14 03:08:34,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:08:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 61061 states and 86341 transitions. [2020-10-14 03:08:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 03:08:34,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:34,752 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:08:34,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:08:34,753 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:34,753 INFO L82 PathProgramCache]: Analyzing trace with hash 731043971, now seen corresponding path program 1 times [2020-10-14 03:08:34,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:34,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127548335] [2020-10-14 03:08:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:08:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:08:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 03:08:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:39,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:08:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:08:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:08:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:08:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:39,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:08:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:40,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:08:40,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:08:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:40,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:08:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:08:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:40,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:40,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:40,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:08:40,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:08:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:40,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:08:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 03:08:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:08:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:08:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:08:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:08:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:08:40,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127548335] [2020-10-14 03:08:40,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:08:40,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:08:40,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338866809] [2020-10-14 03:08:40,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:08:40,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:08:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:08:40,630 INFO L87 Difference]: Start difference. First operand 61061 states and 86341 transitions. Second operand 7 states.