/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/Problem05_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:24:23,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:24:23,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:24:23,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:24:23,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:24:23,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:24:23,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:24:23,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:24:23,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:24:23,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:24:23,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:24:23,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:24:23,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:24:23,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:24:23,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:24:23,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:24:23,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:24:23,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:24:23,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:24:23,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:24:23,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:24:23,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:24:23,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:24:23,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:24:23,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:24:23,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:24:23,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:24:23,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:24:23,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:24:23,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:24:23,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:24:23,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:24:23,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:24:23,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:24:23,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:24:23,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:24:23,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:24:23,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:24:23,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:24:23,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:24:23,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:24:23,962 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 01:24:23,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:24:23,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:24:23,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:24:23,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:24:23,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:24:23,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:24:23,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:24:23,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:24:23,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:24:23,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:24:23,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:24:23,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:24:23,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:24:23,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:24:23,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:24:23,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:24:23,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:24:23,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:24:23,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:24:23,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:24:23,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:24:23,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:24:23,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:24:23,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:24:23,991 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 01:24:24,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:24:24,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:24:24,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:24:24,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:24:24,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:24:24,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-14 01:24:24,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096fed480/f44146b90d3944e3979fc2ab3e4e7c76/FLAGced2e2b56 [2020-10-14 01:24:25,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:24:25,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-14 01:24:25,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096fed480/f44146b90d3944e3979fc2ab3e4e7c76/FLAGced2e2b56 [2020-10-14 01:24:25,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096fed480/f44146b90d3944e3979fc2ab3e4e7c76 [2020-10-14 01:24:25,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:24:25,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:24:25,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:24:25,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:24:25,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:24:25,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:24:25" (1/1) ... [2020-10-14 01:24:25,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ca0b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:25, skipping insertion in model container [2020-10-14 01:24:25,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:24:25" (1/1) ... [2020-10-14 01:24:25,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:24:25,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:24:28,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:24:28,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:24:29,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:24:29,793 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:24:29,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29 WrapperNode [2020-10-14 01:24:29,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:24:29,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:24:29,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:24:29,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:24:29,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:29,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:29,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:29,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:30,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:30,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:30,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (1/1) ... [2020-10-14 01:24:30,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:24:30,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:24:30,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:24:30,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:24:30,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (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 01:24:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:24:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:24:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:24:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:24:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:24:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:24:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:24:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:24:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:24:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:24:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:24:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:24:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:24:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:24:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:24:37,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:24:37,937 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:24:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:24:37 BoogieIcfgContainer [2020-10-14 01:24:37,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:24:37,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:24:37,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:24:37,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:24:37,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:24:25" (1/3) ... [2020-10-14 01:24:37,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248c412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:24:37, skipping insertion in model container [2020-10-14 01:24:37,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:24:29" (2/3) ... [2020-10-14 01:24:37,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248c412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:24:37, skipping insertion in model container [2020-10-14 01:24:37,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:24:37" (3/3) ... [2020-10-14 01:24:37,964 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label46.c [2020-10-14 01:24:37,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:24:37,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:24:37,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:24:38,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:24:38,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:24:38,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:24:38,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:24:38,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:24:38,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:24:38,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:24:38,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:24:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:24:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2020-10-14 01:24:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:24:38,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:38,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:24:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:24:38,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1070221185, now seen corresponding path program 1 times [2020-10-14 01:24:38,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:24:38,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883237698] [2020-10-14 01:24:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:24:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:44,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:44,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-14 01:24:44,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-14 01:24:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:44,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:24:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:24:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1726 [2020-10-14 01:24:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:24:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:24:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:24:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:24:45,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:45,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:24:45,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:24:45,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:24:45,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:24:48,300 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 01:24:48,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883237698] [2020-10-14 01:24:48,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:24:48,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:24:48,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974486874] [2020-10-14 01:24:48,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:24:48,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:24:48,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:24:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:24:48,332 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-14 01:25:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:25:12,135 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2020-10-14 01:25:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:25:12,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1710 [2020-10-14 01:25:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:25:12,201 INFO L225 Difference]: With dead ends: 8125 [2020-10-14 01:25:12,201 INFO L226 Difference]: Without dead ends: 5835 [2020-10-14 01:25:12,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:25:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-14 01:25:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2020-10-14 01:25:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-14 01:25:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2020-10-14 01:25:12,430 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1710 [2020-10-14 01:25:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:25:12,434 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2020-10-14 01:25:12,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:25:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2020-10-14 01:25:12,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2020-10-14 01:25:12,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:25:12,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:12,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:25:12,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:25:12,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:25:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash -722626066, now seen corresponding path program 1 times [2020-10-14 01:25:12,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:25:12,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280973650] [2020-10-14 01:25:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:25:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:17,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:17,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-14 01:25:17,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:25:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 01:25:17,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:17,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:25:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 01:25:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:25:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:25:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:25:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:18,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:18,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:25:18,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:25:18,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:18,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:25:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:25:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 01:25:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:25:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:18,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:18,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:25:18,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:25:18,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:18,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:25:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 01:25:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:25:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:19,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:25:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:25:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:19,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:25:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:25:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:25:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:25:20,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280973650] [2020-10-14 01:25:20,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:25:20,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:25:20,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934724468] [2020-10-14 01:25:20,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:25:20,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:25:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:25:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:25:20,794 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand 8 states. [2020-10-14 01:25:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:25:53,373 INFO L93 Difference]: Finished difference Result 22593 states and 37764 transitions. [2020-10-14 01:25:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:25:53,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1734 [2020-10-14 01:25:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:25:53,463 INFO L225 Difference]: With dead ends: 22593 [2020-10-14 01:25:53,463 INFO L226 Difference]: Without dead ends: 16798 [2020-10-14 01:25:53,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:25:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16798 states. [2020-10-14 01:25:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16798 to 16668. [2020-10-14 01:25:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16668 states. [2020-10-14 01:25:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16668 states to 16668 states and 24766 transitions. [2020-10-14 01:25:53,931 INFO L78 Accepts]: Start accepts. Automaton has 16668 states and 24766 transitions. Word has length 1734 [2020-10-14 01:25:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:25:53,931 INFO L479 AbstractCegarLoop]: Abstraction has 16668 states and 24766 transitions. [2020-10-14 01:25:53,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:25:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 16668 states and 24766 transitions. [2020-10-14 01:25:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2020-10-14 01:25:54,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:25:54,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:54,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:25:54,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:25:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:25:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2090112558, now seen corresponding path program 1 times [2020-10-14 01:25:54,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:25:54,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763079988] [2020-10-14 01:25:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:25:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:59,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1776 [2020-10-14 01:25:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:25:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 01:25:59,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:59,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:25:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 01:25:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:25:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:59,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:25:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:25:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:25:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:59,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:25:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:25:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:25:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:25:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:25:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:25:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:25:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:25:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 01:25:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:25:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:59,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:25:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 01:25:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:25:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 01:26:01,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763079988] [2020-10-14 01:26:01,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:26:01,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 01:26:01,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978135564] [2020-10-14 01:26:01,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:26:01,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:01,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:26:01,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:26:01,030 INFO L87 Difference]: Start difference. First operand 16668 states and 24766 transitions. Second operand 5 states. [2020-10-14 01:26:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:26:23,917 INFO L93 Difference]: Finished difference Result 49532 states and 76626 transitions. [2020-10-14 01:26:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:26:23,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1750 [2020-10-14 01:26:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:26:24,049 INFO L225 Difference]: With dead ends: 49532 [2020-10-14 01:26:24,049 INFO L226 Difference]: Without dead ends: 32870 [2020-10-14 01:26:24,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:26:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32870 states. [2020-10-14 01:26:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32870 to 32768. [2020-10-14 01:26:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32768 states. [2020-10-14 01:26:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32768 states to 32768 states and 48039 transitions. [2020-10-14 01:26:24,885 INFO L78 Accepts]: Start accepts. Automaton has 32768 states and 48039 transitions. Word has length 1750 [2020-10-14 01:26:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:26:24,886 INFO L479 AbstractCegarLoop]: Abstraction has 32768 states and 48039 transitions. [2020-10-14 01:26:24,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:26:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 32768 states and 48039 transitions. [2020-10-14 01:26:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2020-10-14 01:26:25,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:26:25,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:25,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:26:25,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:26:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:26:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash -842262064, now seen corresponding path program 1 times [2020-10-14 01:26:25,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:26:25,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793955379] [2020-10-14 01:26:25,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:26:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:30,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:30,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1774 [2020-10-14 01:26:30,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:26:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5289 [2020-10-14 01:26:30,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:30,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:26:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:26:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 01:26:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:26:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:26:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:30,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:26:30,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:26:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:30,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:26:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:26:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:26:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:30,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:30,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:26:30,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 01:26:30,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:30,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:30,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:26:30,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:26:30,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:26:32,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793955379] [2020-10-14 01:26:32,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:26:32,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:26:32,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419307281] [2020-10-14 01:26:32,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:26:32,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:32,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:26:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:26:32,178 INFO L87 Difference]: Start difference. First operand 32768 states and 48039 transitions. Second operand 7 states. [2020-10-14 01:26:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:26:55,949 INFO L93 Difference]: Finished difference Result 77117 states and 118717 transitions. [2020-10-14 01:26:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:26:55,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1750 [2020-10-14 01:26:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:26:56,077 INFO L225 Difference]: With dead ends: 77117 [2020-10-14 01:26:56,077 INFO L226 Difference]: Without dead ends: 44355 [2020-10-14 01:26:56,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 01:26:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44355 states. [2020-10-14 01:26:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44355 to 44135. [2020-10-14 01:26:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44135 states. [2020-10-14 01:26:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44135 states to 44135 states and 63541 transitions. [2020-10-14 01:26:57,025 INFO L78 Accepts]: Start accepts. Automaton has 44135 states and 63541 transitions. Word has length 1750 [2020-10-14 01:26:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:26:57,026 INFO L479 AbstractCegarLoop]: Abstraction has 44135 states and 63541 transitions. [2020-10-14 01:26:57,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:26:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 44135 states and 63541 transitions. [2020-10-14 01:26:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1752 [2020-10-14 01:26:57,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:26:57,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:57,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:26:57,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:26:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:26:57,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2022691848, now seen corresponding path program 1 times [2020-10-14 01:26:57,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:26:57,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798152340] [2020-10-14 01:26:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:26:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:02,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:02,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1775 [2020-10-14 01:27:02,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:27:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-10-14 01:27:02,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:02,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:27:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:27:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:27:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:27:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:27:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:27:03,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:27:03,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:03,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:27:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:27:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:27:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:27:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:27:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 01:27:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 01:27:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:27:04,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798152340] [2020-10-14 01:27:04,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:27:04,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:27:04,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280009371] [2020-10-14 01:27:04,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:27:04,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:27:04,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:27:04,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:27:04,492 INFO L87 Difference]: Start difference. First operand 44135 states and 63541 transitions. Second operand 8 states. [2020-10-14 01:27:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:27:37,681 INFO L93 Difference]: Finished difference Result 148608 states and 233499 transitions. [2020-10-14 01:27:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:27:37,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1751 [2020-10-14 01:27:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:27:37,993 INFO L225 Difference]: With dead ends: 148608 [2020-10-14 01:27:37,993 INFO L226 Difference]: Without dead ends: 104479 [2020-10-14 01:27:38,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:27:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104479 states. [2020-10-14 01:27:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104479 to 104362. [2020-10-14 01:27:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104362 states. [2020-10-14 01:27:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104362 states to 104362 states and 155039 transitions. [2020-10-14 01:27:40,627 INFO L78 Accepts]: Start accepts. Automaton has 104362 states and 155039 transitions. Word has length 1751 [2020-10-14 01:27:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:27:40,627 INFO L479 AbstractCegarLoop]: Abstraction has 104362 states and 155039 transitions. [2020-10-14 01:27:40,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:27:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 104362 states and 155039 transitions. [2020-10-14 01:27:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1772 [2020-10-14 01:27:40,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:27:40,944 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:40,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:27:40,944 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:27:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:27:40,946 INFO L82 PathProgramCache]: Analyzing trace with hash 242589005, now seen corresponding path program 1 times [2020-10-14 01:27:40,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:27:40,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735675165] [2020-10-14 01:27:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:27:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:46,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1797 [2020-10-14 01:27:46,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:27:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 01:27:46,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:46,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 01:27:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 01:27:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:27:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:46,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:46,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:46,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:27:46,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:27:46,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:46,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:27:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:27:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:27:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:27:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:46,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:27:46,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:27:46,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:46,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:27:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:27:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 01:27:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 01:27:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:46,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:46,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:27:46,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:27:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:27:47,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735675165] [2020-10-14 01:27:47,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:27:47,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:27:47,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702134310] [2020-10-14 01:27:47,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:27:47,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:27:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:27:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:27:47,709 INFO L87 Difference]: Start difference. First operand 104362 states and 155039 transitions. Second operand 7 states.