/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=NARROWEST --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/Problem04_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:39:25,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:39:25,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:39:25,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:39:25,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:39:25,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:39:25,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:39:25,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:39:25,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:39:25,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:39:25,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:39:25,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:39:25,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:39:25,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:39:25,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:39:25,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:39:25,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:39:25,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:39:25,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:39:25,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:39:25,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:39:25,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:39:25,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:39:25,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:39:25,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:39:25,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:39:25,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:39:25,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:39:25,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:39:25,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:39:25,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:39:25,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:39:25,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:39:25,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:39:25,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:39:25,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:39:25,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:39:25,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:39:25,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:39:25,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:39:25,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:39:25,967 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 [2020-10-13 06:39:25,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:39:25,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:39:25,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:39:25,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:39:25,991 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:39:25,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:39:25,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:39:25,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:39:25,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:39:25,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:39:25,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:39:25,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:39:25,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:39:25,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:39:25,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:39:25,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:39:25,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:39:25,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:39:25,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:39:25,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:39:25,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:39:25,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:39:25,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:39:25,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:39:25,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:39:25,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:39:25,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:39:25,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:39:25,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:39:25,996 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:39:26,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:39:26,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:39:26,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:39:26,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:39:26,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:39:26,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-13 06:39:26,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33299f418/6b772309a6fd497aa03c4782e82a20d1/FLAG3bc4ebbbf [2020-10-13 06:39:27,241 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:39:27,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-13 06:39:27,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33299f418/6b772309a6fd497aa03c4782e82a20d1/FLAG3bc4ebbbf [2020-10-13 06:39:27,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33299f418/6b772309a6fd497aa03c4782e82a20d1 [2020-10-13 06:39:27,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:39:27,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:39:27,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:39:27,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:39:27,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:39:27,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:39:27" (1/1) ... [2020-10-13 06:39:27,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cedd037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:27, skipping insertion in model container [2020-10-13 06:39:27,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:39:27" (1/1) ... [2020-10-13 06:39:27,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:39:27,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:39:29,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:39:29,401 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:39:30,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:39:30,232 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:39:30,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30 WrapperNode [2020-10-13 06:39:30,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:39:30,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:39:30,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:39:30,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:39:30,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (1/1) ... [2020-10-13 06:39:30,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:39:30,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:39:30,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:39:30,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:39:30,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (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 [2020-10-13 06:39:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:39:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:39:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:39:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:39:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:39:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:39:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:39:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:39:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:39:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:39:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:39:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:39:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:39:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:39:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:39:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:39:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:39:35,226 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:39:35,226 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:39:35,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:39:35 BoogieIcfgContainer [2020-10-13 06:39:35,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:39:35,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:39:35,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:39:35,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:39:35,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:39:27" (1/3) ... [2020-10-13 06:39:35,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119cd9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:39:35, skipping insertion in model container [2020-10-13 06:39:35,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:30" (2/3) ... [2020-10-13 06:39:35,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119cd9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:39:35, skipping insertion in model container [2020-10-13 06:39:35,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:39:35" (3/3) ... [2020-10-13 06:39:35,248 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label39.c [2020-10-13 06:39:35,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:39:35,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:39:35,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:39:35,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:39:35,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:39:35,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:39:35,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:39:35,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:39:35,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:39:35,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:39:35,314 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:39:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:39:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-13 06:39:35,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:35,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:39:35,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash 731294538, now seen corresponding path program 1 times [2020-10-13 06:39:35,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:35,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954928238] [2020-10-13 06:39:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:41,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:41,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-13 06:39:41,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:39:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-13 06:39:41,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:39:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:39:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:39:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:39:42,727 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 06:39:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:43,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:43,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:43,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:39:43,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:39:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:39:47,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954928238] [2020-10-13 06:39:47,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:39:47,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:39:47,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180179957] [2020-10-13 06:39:47,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:39:47,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:39:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:39:47,840 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:39:48,064 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-13 06:39:48,400 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-13 06:39:48,594 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:39:48,937 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:39:49,214 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:39:51,465 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 06:39:51,833 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-13 06:39:53,848 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-13 06:39:54,112 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:39:55,370 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:40:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:06,017 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:40:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:40:06,021 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 771 [2020-10-13 06:40:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:06,096 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:40:06,096 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:40:06,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:40:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:40:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:40:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:40:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:40:06,326 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 771 [2020-10-13 06:40:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:06,329 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:40:06,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:40:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:40:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-13 06:40:06,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:06,362 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:06,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:40:06,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash 519155097, now seen corresponding path program 1 times [2020-10-13 06:40:06,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:06,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425488305] [2020-10-13 06:40:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:11,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:11,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-13 06:40:11,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:40:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-13 06:40:11,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:40:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:40:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-13 06:40:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:12,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:40:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:12,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 06:40:12,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:40:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:40:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:40:13,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425488305] [2020-10-13 06:40:13,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:13,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:40:13,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303980219] [2020-10-13 06:40:13,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:40:13,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:40:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:40:13,240 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 6 states. [2020-10-13 06:40:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:23,716 INFO L93 Difference]: Finished difference Result 3272 states and 5552 transitions. [2020-10-13 06:40:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:40:23,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 790 [2020-10-13 06:40:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:23,736 INFO L225 Difference]: With dead ends: 3272 [2020-10-13 06:40:23,736 INFO L226 Difference]: Without dead ends: 2425 [2020-10-13 06:40:23,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:40:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-10-13 06:40:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2020-10-13 06:40:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-13 06:40:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3478 transitions. [2020-10-13 06:40:23,814 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3478 transitions. Word has length 790 [2020-10-13 06:40:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:23,815 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3478 transitions. [2020-10-13 06:40:23,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:40:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3478 transitions. [2020-10-13 06:40:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-13 06:40:23,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:23,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:23,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:40:23,828 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1817462250, now seen corresponding path program 1 times [2020-10-13 06:40:23,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:23,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117110518] [2020-10-13 06:40:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:40:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:40:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:40:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:40:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:40:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:29,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:40:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:40:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:40:29,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117110518] [2020-10-13 06:40:29,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:29,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:40:29,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287074409] [2020-10-13 06:40:29,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:40:29,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:40:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:40:29,517 INFO L87 Difference]: Start difference. First operand 2425 states and 3478 transitions. Second operand 8 states. [2020-10-13 06:40:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:46,135 INFO L93 Difference]: Finished difference Result 6767 states and 10339 transitions. [2020-10-13 06:40:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:40:46,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 798 [2020-10-13 06:40:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:46,162 INFO L225 Difference]: With dead ends: 6767 [2020-10-13 06:40:46,163 INFO L226 Difference]: Without dead ends: 5075 [2020-10-13 06:40:46,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:40:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2020-10-13 06:40:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 5031. [2020-10-13 06:40:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5031 states. [2020-10-13 06:40:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5031 states to 5031 states and 6984 transitions. [2020-10-13 06:40:46,305 INFO L78 Accepts]: Start accepts. Automaton has 5031 states and 6984 transitions. Word has length 798 [2020-10-13 06:40:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:46,305 INFO L479 AbstractCegarLoop]: Abstraction has 5031 states and 6984 transitions. [2020-10-13 06:40:46,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:40:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5031 states and 6984 transitions. [2020-10-13 06:40:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-13 06:40:46,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:46,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:46,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:40:46,327 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1049169526, now seen corresponding path program 1 times [2020-10-13 06:40:46,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:46,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197311259] [2020-10-13 06:40:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:51,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:40:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:40:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:51,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:51,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:51,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:40:51,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:40:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:40:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:40:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:40:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:40:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:40:51,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197311259] [2020-10-13 06:40:51,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:51,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:40:51,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301251258] [2020-10-13 06:40:51,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:40:51,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:40:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:40:51,931 INFO L87 Difference]: Start difference. First operand 5031 states and 6984 transitions. Second operand 7 states. [2020-10-13 06:41:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:03,843 INFO L93 Difference]: Finished difference Result 13795 states and 20085 transitions. [2020-10-13 06:41:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:41:03,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2020-10-13 06:41:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:03,889 INFO L225 Difference]: With dead ends: 13795 [2020-10-13 06:41:03,889 INFO L226 Difference]: Without dead ends: 9497 [2020-10-13 06:41:03,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:41:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2020-10-13 06:41:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 9465. [2020-10-13 06:41:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9465 states. [2020-10-13 06:41:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 13151 transitions. [2020-10-13 06:41:04,182 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 13151 transitions. Word has length 804 [2020-10-13 06:41:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 9465 states and 13151 transitions. [2020-10-13 06:41:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:41:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 13151 transitions. [2020-10-13 06:41:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-13 06:41:04,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:04,227 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:04,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:41:04,227 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1340779624, now seen corresponding path program 1 times [2020-10-13 06:41:04,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:04,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992436868] [2020-10-13 06:41:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:09,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:09,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-13 06:41:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 06:41:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:41:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:09,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:09,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:09,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:41:09,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:09,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:09,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:09,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:41:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:41:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:41:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:41:09,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992436868] [2020-10-13 06:41:09,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:09,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:41:09,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727375974] [2020-10-13 06:41:09,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:41:09,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:09,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:41:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:41:09,914 INFO L87 Difference]: Start difference. First operand 9465 states and 13151 transitions. Second operand 7 states. [2020-10-13 06:41:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:21,875 INFO L93 Difference]: Finished difference Result 25508 states and 37412 transitions. [2020-10-13 06:41:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:41:21,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 817 [2020-10-13 06:41:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:21,947 INFO L225 Difference]: With dead ends: 25508 [2020-10-13 06:41:21,947 INFO L226 Difference]: Without dead ends: 16776 [2020-10-13 06:41:21,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:41:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16776 states. [2020-10-13 06:41:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16776 to 16574. [2020-10-13 06:41:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16574 states. [2020-10-13 06:41:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16574 states to 16574 states and 22445 transitions. [2020-10-13 06:41:22,386 INFO L78 Accepts]: Start accepts. Automaton has 16574 states and 22445 transitions. Word has length 817 [2020-10-13 06:41:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:22,386 INFO L479 AbstractCegarLoop]: Abstraction has 16574 states and 22445 transitions. [2020-10-13 06:41:22,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:41:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 16574 states and 22445 transitions. [2020-10-13 06:41:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-13 06:41:22,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:22,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:22,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:41:22,448 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash -421234267, now seen corresponding path program 1 times [2020-10-13 06:41:22,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:22,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281497591] [2020-10-13 06:41:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:27,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-13 06:41:27,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:41:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 06:41:27,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:41:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:27,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:27,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:27,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:27,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:41:27,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:41:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:41:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:41:27,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:41:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:41:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:41:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:41:27,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 68 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:41:28,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281497591] [2020-10-13 06:41:28,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:28,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:41:28,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142846092] [2020-10-13 06:41:28,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:41:28,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:28,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:41:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:41:28,037 INFO L87 Difference]: Start difference. First operand 16574 states and 22445 transitions. Second operand 7 states. [2020-10-13 06:41:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:38,793 INFO L93 Difference]: Finished difference Result 32746 states and 45491 transitions. [2020-10-13 06:41:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:41:38,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 832 [2020-10-13 06:41:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:38,865 INFO L225 Difference]: With dead ends: 32746 [2020-10-13 06:41:38,866 INFO L226 Difference]: Without dead ends: 16905 [2020-10-13 06:41:38,912 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 [2020-10-13 06:41:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16905 states. [2020-10-13 06:41:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16905 to 16771. [2020-10-13 06:41:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16771 states. [2020-10-13 06:41:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16771 states to 16771 states and 21863 transitions. [2020-10-13 06:41:39,308 INFO L78 Accepts]: Start accepts. Automaton has 16771 states and 21863 transitions. Word has length 832 [2020-10-13 06:41:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:39,308 INFO L479 AbstractCegarLoop]: Abstraction has 16771 states and 21863 transitions. [2020-10-13 06:41:39,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:41:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 16771 states and 21863 transitions. [2020-10-13 06:41:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-13 06:41:39,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:39,373 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:39,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:41:39,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2079496380, now seen corresponding path program 1 times [2020-10-13 06:41:39,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:39,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371112823] [2020-10-13 06:41:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:41,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 877 [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 06:41:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:44,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:44,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:41:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:44,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 06:41:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 06:41:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:41:45,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371112823] [2020-10-13 06:41:45,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:45,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:41:45,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141795404] [2020-10-13 06:41:45,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:41:45,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:45,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:41:45,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:41:45,082 INFO L87 Difference]: Start difference. First operand 16771 states and 21863 transitions. Second operand 7 states. [2020-10-13 06:41:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:57,262 INFO L93 Difference]: Finished difference Result 47569 states and 64944 transitions. [2020-10-13 06:41:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:41:57,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 859 [2020-10-13 06:41:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:57,347 INFO L225 Difference]: With dead ends: 47569 [2020-10-13 06:41:57,347 INFO L226 Difference]: Without dead ends: 31531 [2020-10-13 06:41:57,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:41:57,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2020-10-13 06:41:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 31404. [2020-10-13 06:41:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31404 states. [2020-10-13 06:41:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31404 states to 31404 states and 39632 transitions. [2020-10-13 06:41:58,042 INFO L78 Accepts]: Start accepts. Automaton has 31404 states and 39632 transitions. Word has length 859 [2020-10-13 06:41:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:58,043 INFO L479 AbstractCegarLoop]: Abstraction has 31404 states and 39632 transitions. [2020-10-13 06:41:58,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:41:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 31404 states and 39632 transitions. [2020-10-13 06:41:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-13 06:41:58,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:58,101 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:58,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:41:58,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -844442946, now seen corresponding path program 1 times [2020-10-13 06:41:58,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:58,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28087749] [2020-10-13 06:41:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:03,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-13 06:42:03,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-13 06:42:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:03,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:03,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:03,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:42:03,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:42:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:04,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28087749] [2020-10-13 06:42:04,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:04,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:42:04,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877433880] [2020-10-13 06:42:04,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:42:04,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:42:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:42:04,368 INFO L87 Difference]: Start difference. First operand 31404 states and 39632 transitions. Second operand 5 states. [2020-10-13 06:42:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:15,331 INFO L93 Difference]: Finished difference Result 74658 states and 97264 transitions. [2020-10-13 06:42:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:42:15,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 915 [2020-10-13 06:42:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:15,463 INFO L225 Difference]: With dead ends: 74658 [2020-10-13 06:42:15,463 INFO L226 Difference]: Without dead ends: 43987 [2020-10-13 06:42:15,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:42:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43987 states. [2020-10-13 06:42:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43987 to 42306. [2020-10-13 06:42:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42306 states. [2020-10-13 06:42:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42306 states to 42306 states and 52494 transitions. [2020-10-13 06:42:16,313 INFO L78 Accepts]: Start accepts. Automaton has 42306 states and 52494 transitions. Word has length 915 [2020-10-13 06:42:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:16,315 INFO L479 AbstractCegarLoop]: Abstraction has 42306 states and 52494 transitions. [2020-10-13 06:42:16,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:42:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 42306 states and 52494 transitions. [2020-10-13 06:42:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-13 06:42:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:16,384 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:42:16,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:42:16,385 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash -416437217, now seen corresponding path program 1 times [2020-10-13 06:42:16,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:16,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287578220] [2020-10-13 06:42:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-13 06:42:21,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:42:21,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 06:42:21,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:42:21,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 06:42:21,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:42:21,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:42:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 06:42:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:42:21,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 06:42:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 06:42:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-13 06:42:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 235 proven. 72 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 06:42:22,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287578220] [2020-10-13 06:42:22,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:22,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:42:22,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394111069] [2020-10-13 06:42:22,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:42:22,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:42:22,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:42:22,331 INFO L87 Difference]: Start difference. First operand 42306 states and 52494 transitions. Second operand 8 states. [2020-10-13 06:42:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:49,810 INFO L93 Difference]: Finished difference Result 157545 states and 199855 transitions. [2020-10-13 06:42:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:42:49,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 995 [2020-10-13 06:42:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:50,162 INFO L225 Difference]: With dead ends: 157545 [2020-10-13 06:42:50,162 INFO L226 Difference]: Without dead ends: 115972 [2020-10-13 06:42:50,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:42:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115972 states. [2020-10-13 06:42:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115972 to 109244. [2020-10-13 06:42:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109244 states. [2020-10-13 06:42:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109244 states to 109244 states and 135014 transitions. [2020-10-13 06:42:52,183 INFO L78 Accepts]: Start accepts. Automaton has 109244 states and 135014 transitions. Word has length 995 [2020-10-13 06:42:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:52,184 INFO L479 AbstractCegarLoop]: Abstraction has 109244 states and 135014 transitions. [2020-10-13 06:42:52,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:42:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 109244 states and 135014 transitions. [2020-10-13 06:42:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-13 06:42:52,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:52,349 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:42:52,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:42:52,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash 824052428, now seen corresponding path program 1 times [2020-10-13 06:42:52,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510188163] [2020-10-13 06:42:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1160 [2020-10-13 06:42:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-13 06:42:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:42:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:42:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:57,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:42:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:42:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:42:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 06:42:58,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:42:58,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 06:42:58,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 06:42:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 449 proven. 67 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-13 06:42:58,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510188163] [2020-10-13 06:42:58,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:58,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:58,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316116496] [2020-10-13 06:42:58,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:58,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:58,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:58,805 INFO L87 Difference]: Start difference. First operand 109244 states and 135014 transitions. Second operand 7 states.