/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/Problem15_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:24:07,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:24:07,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:24:07,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:24:07,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:24:07,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:24:07,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:24:07,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:24:07,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:24:07,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:24:07,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:24:07,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:24:07,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:24:07,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:24:07,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:24:07,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:24:07,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:24:07,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:24:07,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:24:07,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:24:07,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:24:07,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:24:07,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:24:07,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:24:07,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:24:07,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:24:07,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:24:07,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:24:07,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:24:07,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:24:07,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:24:07,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:24:07,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:24:07,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:24:07,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:24:07,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:24:07,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:24:07,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:24:07,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:24:07,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:24:07,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:24:07,913 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 03:24:07,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:24:07,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:24:07,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:24:07,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:24:07,952 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:24:07,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:24:07,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:24:07,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:24:07,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:24:07,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:24:07,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:24:07,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:24:07,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:24:07,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:24:07,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:24:07,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:24:07,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:24:07,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:24:07,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:24:07,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:24:07,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:24:07,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:24:07,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:24:07,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:24:07,959 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 03:24:08,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:24:08,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:24:08,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:24:08,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:24:08,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:24:08,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-14 03:24:08,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff9386cb/d0f0a236e0204cb2aafe2e43c086f6a2/FLAG608ca7809 [2020-10-14 03:24:09,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:24:09,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-14 03:24:09,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff9386cb/d0f0a236e0204cb2aafe2e43c086f6a2/FLAG608ca7809 [2020-10-14 03:24:09,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff9386cb/d0f0a236e0204cb2aafe2e43c086f6a2 [2020-10-14 03:24:09,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:24:09,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:24:09,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:09,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:24:09,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:24:09,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:09" (1/1) ... [2020-10-14 03:24:09,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad542c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:09, skipping insertion in model container [2020-10-14 03:24:09,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:09" (1/1) ... [2020-10-14 03:24:09,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:24:09,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:24:10,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:10,436 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:24:10,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:10,763 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:24:10,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10 WrapperNode [2020-10-14 03:24:10,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:10,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:24:10,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:24:10,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:24:10,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (1/1) ... [2020-10-14 03:24:10,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:24:10,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:24:10,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:24:10,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:24:10,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (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 03:24:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:24:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:24:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:24:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:24:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:24:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:24:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:24:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:24:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:24:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:24:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:24:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:24:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:24:17,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:24:17,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:24:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:17 BoogieIcfgContainer [2020-10-14 03:24:17,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:24:17,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:24:17,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:24:17,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:24:17,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:24:09" (1/3) ... [2020-10-14 03:24:17,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4921c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:17, skipping insertion in model container [2020-10-14 03:24:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:10" (2/3) ... [2020-10-14 03:24:17,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4921c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:17, skipping insertion in model container [2020-10-14 03:24:17,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:17" (3/3) ... [2020-10-14 03:24:17,767 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2020-10-14 03:24:17,778 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:24:17,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:24:17,806 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:24:17,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:24:17,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:24:17,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:24:17,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:24:17,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:24:17,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:24:17,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:24:17,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:24:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:24:17,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 03:24:17,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:17,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:17,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 192141165, now seen corresponding path program 1 times [2020-10-14 03:24:17,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:17,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001144256] [2020-10-14 03:24:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:18,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:18,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 03:24:18,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 03:24:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:18,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:24:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:24:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:18,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:18,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:24:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:18,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:18,797 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 03:24:18,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001144256] [2020-10-14 03:24:18,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:18,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:24:18,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992218638] [2020-10-14 03:24:18,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:24:18,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:18,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:24:18,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:24:18,827 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:24:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:24,502 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:24:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:24,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 03:24:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:24,529 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:24:24,530 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:24:24,542 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 03:24:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:24:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:24:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:24:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:24:24,641 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 57 [2020-10-14 03:24:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:24,642 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:24:24,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:24:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:24:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 03:24:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:24,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 03:24:24,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:24:24,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1704640918, now seen corresponding path program 1 times [2020-10-14 03:24:24,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:24,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808225376] [2020-10-14 03:24:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:25,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 03:24:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-10-14 03:24:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:26,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:24:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 03:24:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:26,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:26,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:27,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:27,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:24:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:24:27,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:27,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:24:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:27,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808225376] [2020-10-14 03:24:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:27,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520376005] [2020-10-14 03:24:27,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:27,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:27,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:27,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:27,133 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:24:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:32,969 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 03:24:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:32,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-14 03:24:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:32,984 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 03:24:32,985 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 03:24:32,987 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 03:24:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 03:24:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 03:24:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 03:24:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 03:24:33,043 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 126 [2020-10-14 03:24:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:33,043 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 03:24:33,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 03:24:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 03:24:33,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:33,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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 03:24:33,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:24:33,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:33,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:33,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1755799034, now seen corresponding path program 1 times [2020-10-14 03:24:33,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:33,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368146332] [2020-10-14 03:24:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 03:24:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:24:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3878 [2020-10-14 03:24:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:24:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:37,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:24:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:24:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:24:37,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 03:24:37,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:24:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:37,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368146332] [2020-10-14 03:24:37,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:37,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:37,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279976384] [2020-10-14 03:24:37,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:37,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:37,591 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 03:24:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:47,242 INFO L93 Difference]: Finished difference Result 3608 states and 4796 transitions. [2020-10-14 03:24:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:24:47,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-14 03:24:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:47,265 INFO L225 Difference]: With dead ends: 3608 [2020-10-14 03:24:47,265 INFO L226 Difference]: Without dead ends: 2297 [2020-10-14 03:24:47,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 03:24:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-10-14 03:24:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1964. [2020-10-14 03:24:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2020-10-14 03:24:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2438 transitions. [2020-10-14 03:24:47,338 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2438 transitions. Word has length 231 [2020-10-14 03:24:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:47,339 INFO L479 AbstractCegarLoop]: Abstraction has 1964 states and 2438 transitions. [2020-10-14 03:24:47,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:24:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2438 transitions. [2020-10-14 03:24:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 03:24:47,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:47,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:47,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:24:47,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1290056644, now seen corresponding path program 1 times [2020-10-14 03:24:47,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:47,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402053386] [2020-10-14 03:24:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 03:24:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 03:24:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:52,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:24:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:24:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:24:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:52,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:52,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:24:52,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 03:24:52,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:52,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:24:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:24:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:53,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:24:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:24:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:53,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:24:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:53,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402053386] [2020-10-14 03:24:53,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:53,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:53,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965703987] [2020-10-14 03:24:53,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:53,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:53,287 INFO L87 Difference]: Start difference. First operand 1964 states and 2438 transitions. Second operand 7 states. [2020-10-14 03:25:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:03,456 INFO L93 Difference]: Finished difference Result 4939 states and 6332 transitions. [2020-10-14 03:25:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:03,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 03:25:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:03,474 INFO L225 Difference]: With dead ends: 4939 [2020-10-14 03:25:03,474 INFO L226 Difference]: Without dead ends: 2981 [2020-10-14 03:25:03,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-10-14 03:25:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2941. [2020-10-14 03:25:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states. [2020-10-14 03:25:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 3672 transitions. [2020-10-14 03:25:03,572 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 3672 transitions. Word has length 337 [2020-10-14 03:25:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:03,575 INFO L479 AbstractCegarLoop]: Abstraction has 2941 states and 3672 transitions. [2020-10-14 03:25:03,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 3672 transitions. [2020-10-14 03:25:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-14 03:25:03,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:03,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:03,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:25:03,583 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -712494961, now seen corresponding path program 1 times [2020-10-14 03:25:03,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:03,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527983568] [2020-10-14 03:25:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:08,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-14 03:25:08,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:25:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4910 [2020-10-14 03:25:08,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:08,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:25:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:25:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 03:25:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:08,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:08,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:08,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:25:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:08,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:25:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:25:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:08,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:25:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:25:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:09,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:25:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 03:25:09,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:09,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:25:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:09,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527983568] [2020-10-14 03:25:09,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:09,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:09,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368868480] [2020-10-14 03:25:09,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:09,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:09,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:09,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:09,568 INFO L87 Difference]: Start difference. First operand 2941 states and 3672 transitions. Second operand 7 states. [2020-10-14 03:25:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:22,117 INFO L93 Difference]: Finished difference Result 7839 states and 10223 transitions. [2020-10-14 03:25:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:22,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-14 03:25:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:22,147 INFO L225 Difference]: With dead ends: 7839 [2020-10-14 03:25:22,148 INFO L226 Difference]: Without dead ends: 4583 [2020-10-14 03:25:22,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2020-10-14 03:25:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 4523. [2020-10-14 03:25:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-10-14 03:25:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 5198 transitions. [2020-10-14 03:25:22,288 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 5198 transitions. Word has length 352 [2020-10-14 03:25:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:22,289 INFO L479 AbstractCegarLoop]: Abstraction has 4523 states and 5198 transitions. [2020-10-14 03:25:22,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 5198 transitions. [2020-10-14 03:25:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 03:25:22,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:22,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:22,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:25:22,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1206971696, now seen corresponding path program 1 times [2020-10-14 03:25:22,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:22,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630186723] [2020-10-14 03:25:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-14 03:25:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3868 [2020-10-14 03:25:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:25:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:25:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:26,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:25:26,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 03:25:26,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:25:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:25:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:25:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 03:25:27,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:27,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:25:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:25:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:27,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630186723] [2020-10-14 03:25:27,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:27,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:25:27,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398644246] [2020-10-14 03:25:27,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:25:27,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:25:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:25:27,347 INFO L87 Difference]: Start difference. First operand 4523 states and 5198 transitions. Second operand 8 states. [2020-10-14 03:25:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:38,441 INFO L93 Difference]: Finished difference Result 12261 states and 14478 transitions. [2020-10-14 03:25:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 03:25:38,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-10-14 03:25:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:38,474 INFO L225 Difference]: With dead ends: 12261 [2020-10-14 03:25:38,474 INFO L226 Difference]: Without dead ends: 7744 [2020-10-14 03:25:38,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:25:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7744 states. [2020-10-14 03:25:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7744 to 7387. [2020-10-14 03:25:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7387 states. [2020-10-14 03:25:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7387 states to 7387 states and 8495 transitions. [2020-10-14 03:25:38,683 INFO L78 Accepts]: Start accepts. Automaton has 7387 states and 8495 transitions. Word has length 368 [2020-10-14 03:25:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:38,684 INFO L479 AbstractCegarLoop]: Abstraction has 7387 states and 8495 transitions. [2020-10-14 03:25:38,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:25:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7387 states and 8495 transitions. [2020-10-14 03:25:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 03:25:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:38,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:38,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:25:38,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1264684413, now seen corresponding path program 1 times [2020-10-14 03:25:38,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:38,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528288450] [2020-10-14 03:25:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:38,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-14 03:25:43,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4843 [2020-10-14 03:25:43,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:43,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:25:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:25:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:43,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:43,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:43,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:25:43,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:43,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:44,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:44,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:25:44,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:44,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 03:25:44,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:44,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:44,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:44,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:25:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:25:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:25:44,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:25:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:44,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528288450] [2020-10-14 03:25:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:44,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:44,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187297181] [2020-10-14 03:25:44,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:44,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:44,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:44,661 INFO L87 Difference]: Start difference. First operand 7387 states and 8495 transitions. Second operand 7 states. [2020-10-14 03:25:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:58,827 INFO L93 Difference]: Finished difference Result 17971 states and 21181 transitions. [2020-10-14 03:25:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:25:58,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 03:25:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:58,872 INFO L225 Difference]: With dead ends: 17971 [2020-10-14 03:25:58,873 INFO L226 Difference]: Without dead ends: 9957 [2020-10-14 03:25:58,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:25:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2020-10-14 03:25:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9904. [2020-10-14 03:25:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9904 states. [2020-10-14 03:25:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 11390 transitions. [2020-10-14 03:25:59,134 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 11390 transitions. Word has length 419 [2020-10-14 03:25:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:59,135 INFO L479 AbstractCegarLoop]: Abstraction has 9904 states and 11390 transitions. [2020-10-14 03:25:59,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 11390 transitions. [2020-10-14 03:25:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 03:25:59,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:59,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:59,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:25:59,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:59,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1183346905, now seen corresponding path program 1 times [2020-10-14 03:25:59,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:59,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268414994] [2020-10-14 03:25:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 03:26:01,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:26:01,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-14 03:26:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:26:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:01,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:01,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:26:01,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:26:01,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:26:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:01,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:02,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268414994] [2020-10-14 03:26:02,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:02,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:02,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229590073] [2020-10-14 03:26:02,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:02,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:02,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:02,032 INFO L87 Difference]: Start difference. First operand 9904 states and 11390 transitions. Second operand 7 states. [2020-10-14 03:26:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:11,748 INFO L93 Difference]: Finished difference Result 20621 states and 24596 transitions. [2020-10-14 03:26:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:11,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-14 03:26:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:11,803 INFO L225 Difference]: With dead ends: 20621 [2020-10-14 03:26:11,803 INFO L226 Difference]: Without dead ends: 10723 [2020-10-14 03:26:11,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10723 states. [2020-10-14 03:26:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10723 to 10547. [2020-10-14 03:26:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10547 states. [2020-10-14 03:26:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 12100 transitions. [2020-10-14 03:26:12,106 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 12100 transitions. Word has length 442 [2020-10-14 03:26:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:12,107 INFO L479 AbstractCegarLoop]: Abstraction has 10547 states and 12100 transitions. [2020-10-14 03:26:12,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 12100 transitions. [2020-10-14 03:26:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-14 03:26:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:12,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:12,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:26:12,119 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1851986449, now seen corresponding path program 1 times [2020-10-14 03:26:12,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513058130] [2020-10-14 03:26:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 03:26:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 03:26:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:13,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:13,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:13,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:13,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:26:13,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:13,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:26:13,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:13,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:26:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 03:26:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:13,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:26:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 03:26:13,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513058130] [2020-10-14 03:26:13,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:13,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:26:13,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271379765] [2020-10-14 03:26:13,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:26:13,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:13,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:26:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:26:13,623 INFO L87 Difference]: Start difference. First operand 10547 states and 12100 transitions. Second operand 5 states. [2020-10-14 03:26:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:23,686 INFO L93 Difference]: Finished difference Result 25566 states and 29987 transitions. [2020-10-14 03:26:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:26:23,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 454 [2020-10-14 03:26:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:23,745 INFO L225 Difference]: With dead ends: 25566 [2020-10-14 03:26:23,746 INFO L226 Difference]: Without dead ends: 15025 [2020-10-14 03:26:23,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:26:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15025 states. [2020-10-14 03:26:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15025 to 14999. [2020-10-14 03:26:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14999 states. [2020-10-14 03:26:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 17672 transitions. [2020-10-14 03:26:24,041 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 17672 transitions. Word has length 454 [2020-10-14 03:26:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:24,042 INFO L479 AbstractCegarLoop]: Abstraction has 14999 states and 17672 transitions. [2020-10-14 03:26:24,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:26:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 17672 transitions. [2020-10-14 03:26:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-14 03:26:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:24,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:26:24,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:26:24,057 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash -848435748, now seen corresponding path program 1 times [2020-10-14 03:26:24,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:24,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330398471] [2020-10-14 03:26:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:29,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:26:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:29,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:29,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:29,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:26:29,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:26:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:26:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:26:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:30,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330398471] [2020-10-14 03:26:30,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:30,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:30,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689095800] [2020-10-14 03:26:30,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:30,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:30,293 INFO L87 Difference]: Start difference. First operand 14999 states and 17672 transitions. Second operand 7 states. [2020-10-14 03:26:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:42,613 INFO L93 Difference]: Finished difference Result 30989 states and 36608 transitions. [2020-10-14 03:26:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:26:42,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-14 03:26:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:42,670 INFO L225 Difference]: With dead ends: 30989 [2020-10-14 03:26:42,671 INFO L226 Difference]: Without dead ends: 15681 [2020-10-14 03:26:42,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:26:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15681 states. [2020-10-14 03:26:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15681 to 15645. [2020-10-14 03:26:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15645 states. [2020-10-14 03:26:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 18363 transitions. [2020-10-14 03:26:43,015 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 18363 transitions. Word has length 494 [2020-10-14 03:26:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:43,016 INFO L479 AbstractCegarLoop]: Abstraction has 15645 states and 18363 transitions. [2020-10-14 03:26:43,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 18363 transitions. [2020-10-14 03:26:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-14 03:26:43,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:43,028 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:43,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:26:43,028 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:43,029 INFO L82 PathProgramCache]: Analyzing trace with hash -233517203, now seen corresponding path program 1 times [2020-10-14 03:26:43,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:43,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295274825] [2020-10-14 03:26:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-14 03:26:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:26:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:48,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:26:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:26:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:26:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:26:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:26:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:26:48,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295274825] [2020-10-14 03:26:48,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:48,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:48,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566489436] [2020-10-14 03:26:48,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:48,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:48,794 INFO L87 Difference]: Start difference. First operand 15645 states and 18363 transitions. Second operand 7 states. [2020-10-14 03:27:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:00,658 INFO L93 Difference]: Finished difference Result 35385 states and 42298 transitions. [2020-10-14 03:27:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:27:00,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-14 03:27:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:00,716 INFO L225 Difference]: With dead ends: 35385 [2020-10-14 03:27:00,716 INFO L226 Difference]: Without dead ends: 19437 [2020-10-14 03:27:00,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:27:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2020-10-14 03:27:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 18751. [2020-10-14 03:27:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18751 states. [2020-10-14 03:27:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18751 states to 18751 states and 21968 transitions. [2020-10-14 03:27:01,207 INFO L78 Accepts]: Start accepts. Automaton has 18751 states and 21968 transitions. Word has length 520 [2020-10-14 03:27:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:01,208 INFO L479 AbstractCegarLoop]: Abstraction has 18751 states and 21968 transitions. [2020-10-14 03:27:01,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18751 states and 21968 transitions. [2020-10-14 03:27:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-14 03:27:01,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:01,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:01,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:27:01,218 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:01,219 INFO L82 PathProgramCache]: Analyzing trace with hash -143874713, now seen corresponding path program 1 times [2020-10-14 03:27:01,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:01,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145433120] [2020-10-14 03:27:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:03,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:03,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-14 03:27:03,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2628 [2020-10-14 03:27:03,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:03,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-14 03:27:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 03:27:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:04,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:27:04,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:27:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:27:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 03:27:04,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145433120] [2020-10-14 03:27:04,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:04,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:04,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507539693] [2020-10-14 03:27:04,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:04,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:04,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:04,459 INFO L87 Difference]: Start difference. First operand 18751 states and 21968 transitions. Second operand 5 states. [2020-10-14 03:27:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:13,235 INFO L93 Difference]: Finished difference Result 21845 states and 25278 transitions. [2020-10-14 03:27:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:13,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 521 [2020-10-14 03:27:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:13,312 INFO L225 Difference]: With dead ends: 21845 [2020-10-14 03:27:13,312 INFO L226 Difference]: Without dead ends: 21843 [2020-10-14 03:27:13,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 03:27:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2020-10-14 03:27:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 19983. [2020-10-14 03:27:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19983 states. [2020-10-14 03:27:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19983 states to 19983 states and 23319 transitions. [2020-10-14 03:27:13,760 INFO L78 Accepts]: Start accepts. Automaton has 19983 states and 23319 transitions. Word has length 521 [2020-10-14 03:27:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:13,761 INFO L479 AbstractCegarLoop]: Abstraction has 19983 states and 23319 transitions. [2020-10-14 03:27:13,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19983 states and 23319 transitions. [2020-10-14 03:27:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-14 03:27:13,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:13,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:13,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:27:13,785 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:13,785 INFO L82 PathProgramCache]: Analyzing trace with hash -251442658, now seen corresponding path program 1 times [2020-10-14 03:27:13,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:13,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530329526] [2020-10-14 03:27:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:17,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-14 03:27:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-14 03:27:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-14 03:27:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 03:27:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:19,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:27:19,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 03:27:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:27:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-14 03:27:19,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530329526] [2020-10-14 03:27:19,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:19,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:19,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702749453] [2020-10-14 03:27:19,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:19,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:19,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:19,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:19,649 INFO L87 Difference]: Start difference. First operand 19983 states and 23319 transitions. Second operand 5 states. [2020-10-14 03:27:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:27,614 INFO L93 Difference]: Finished difference Result 45508 states and 54032 transitions. [2020-10-14 03:27:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:27,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 545 [2020-10-14 03:27:27,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:27,670 INFO L225 Difference]: With dead ends: 45508 [2020-10-14 03:27:27,670 INFO L226 Difference]: Without dead ends: 25531 [2020-10-14 03:27:27,701 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 03:27:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25531 states. [2020-10-14 03:27:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25531 to 24594. [2020-10-14 03:27:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24594 states. [2020-10-14 03:27:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24594 states to 24594 states and 28397 transitions. [2020-10-14 03:27:28,149 INFO L78 Accepts]: Start accepts. Automaton has 24594 states and 28397 transitions. Word has length 545 [2020-10-14 03:27:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:28,150 INFO L479 AbstractCegarLoop]: Abstraction has 24594 states and 28397 transitions. [2020-10-14 03:27:28,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 24594 states and 28397 transitions. [2020-10-14 03:27:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-14 03:27:28,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:28,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:28,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:27:28,163 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:28,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:28,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1972748698, now seen corresponding path program 1 times [2020-10-14 03:27:28,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:28,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139125624] [2020-10-14 03:27:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2563 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:27:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:31,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:31,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:27:31,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:27:31,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:31,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:27:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:27:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:27:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:31,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:27:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:27:31,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:31,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:27:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:27:31,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139125624] [2020-10-14 03:27:31,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:31,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:31,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165165321] [2020-10-14 03:27:31,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:31,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:31,702 INFO L87 Difference]: Start difference. First operand 24594 states and 28397 transitions. Second operand 7 states. [2020-10-14 03:27:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:44,914 INFO L93 Difference]: Finished difference Result 59417 states and 68983 transitions. [2020-10-14 03:27:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:27:44,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-14 03:27:44,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:44,967 INFO L225 Difference]: With dead ends: 59417 [2020-10-14 03:27:44,967 INFO L226 Difference]: Without dead ends: 33282 [2020-10-14 03:27:44,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 03:27:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33282 states. [2020-10-14 03:27:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33282 to 29563. [2020-10-14 03:27:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29563 states. [2020-10-14 03:27:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29563 states to 29563 states and 33944 transitions. [2020-10-14 03:27:45,481 INFO L78 Accepts]: Start accepts. Automaton has 29563 states and 33944 transitions. Word has length 547 [2020-10-14 03:27:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:45,482 INFO L479 AbstractCegarLoop]: Abstraction has 29563 states and 33944 transitions. [2020-10-14 03:27:45,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29563 states and 33944 transitions. [2020-10-14 03:27:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-14 03:27:45,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:45,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:45,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:27:45,495 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:45,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1900253001, now seen corresponding path program 1 times [2020-10-14 03:27:45,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:45,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241448323] [2020-10-14 03:27:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 03:27:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:27:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:27:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:50,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:27:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:27:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-14 03:27:51,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241448323] [2020-10-14 03:27:51,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:51,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:51,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497705693] [2020-10-14 03:27:51,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:51,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:51,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:51,126 INFO L87 Difference]: Start difference. First operand 29563 states and 33944 transitions. Second operand 5 states.