/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:37:02,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:37:02,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:37:02,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:37:02,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:37:02,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:37:02,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:37:02,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:37:02,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:37:02,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:37:02,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:37:02,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:37:02,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:37:02,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:37:02,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:37:02,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:37:02,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:37:02,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:37:02,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:37:02,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:37:02,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:37:02,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:37:02,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:37:02,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:37:02,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:37:02,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:37:02,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:37:02,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:37:02,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:37:02,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:37:02,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:37:02,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:37:02,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:37:02,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:37:02,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:37:02,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:37:02,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:37:02,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:37:02,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:37:02,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:37:02,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:37:02,989 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 06:37:03,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:37:03,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:37:03,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:37:03,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:37:03,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:37:03,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:37:03,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:37:03,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:37:03,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:37:03,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:37:03,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:37:03,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:37:03,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:37:03,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:37:03,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:37:03,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:37:03,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:37:03,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:37:03,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:37:03,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:37:03,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:37:03,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:37:03,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:37:03,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:37:03,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:37:03,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:37:03,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:37:03,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:37:03,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:37:03,049 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 06:37:03,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:37:03,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:37:03,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:37:03,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:37:03,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:37:03,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2020-10-13 06:37:03,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5992602f6/4c4dba74d1b54d9ca83396ba37635d13/FLAG7e4c1f633 [2020-10-13 06:37:04,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:37:04,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2020-10-13 06:37:04,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5992602f6/4c4dba74d1b54d9ca83396ba37635d13/FLAG7e4c1f633 [2020-10-13 06:37:04,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5992602f6/4c4dba74d1b54d9ca83396ba37635d13 [2020-10-13 06:37:04,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:37:04,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:37:04,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:37:04,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:37:04,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:37:04,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:37:04" (1/1) ... [2020-10-13 06:37:04,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:04, skipping insertion in model container [2020-10-13 06:37:04,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:37:04" (1/1) ... [2020-10-13 06:37:04,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:37:04,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:37:06,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:37:06,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:37:07,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:37:07,047 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:37:07,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07 WrapperNode [2020-10-13 06:37:07,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:37:07,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:37:07,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:37:07,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:37:07,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (1/1) ... [2020-10-13 06:37:07,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:37:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:37:07,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:37:07,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:37:07,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (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 06:37:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:37:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:37:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:37:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:37:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:37:07,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:37:07,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:37:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:37:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:37:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:37:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:37:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:37:11,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:37:11,621 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:37:11,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:37:11 BoogieIcfgContainer [2020-10-13 06:37:11,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:37:11,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:37:11,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:37:11,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:37:11,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:37:04" (1/3) ... [2020-10-13 06:37:11,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:37:11, skipping insertion in model container [2020-10-13 06:37:11,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:37:07" (2/3) ... [2020-10-13 06:37:11,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:37:11, skipping insertion in model container [2020-10-13 06:37:11,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:37:11" (3/3) ... [2020-10-13 06:37:11,655 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label37.c [2020-10-13 06:37:11,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:37:11,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:37:11,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:37:11,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:37:11,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:37:11,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:37:11,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:37:11,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:37:11,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:37:11,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:37:11,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:37:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:37:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-13 06:37:11,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:11,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:11,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:11,841 INFO L82 PathProgramCache]: Analyzing trace with hash 874742698, now seen corresponding path program 1 times [2020-10-13 06:37:11,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:11,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421322178] [2020-10-13 06:37:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:13,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:17,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:17,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-13 06:37:17,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:37:17,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 06:37:17,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:37:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:37:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:37:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:37:20,067 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 06:37:20,248 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 06:37:20,482 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-13 06:37:20,630 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-13 06:37:20,902 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-13 06:37:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:21,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:21,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:37:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:37:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:26,037 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 06:37:26,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421322178] [2020-10-13 06:37:26,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:37:26,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:37:26,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131382610] [2020-10-13 06:37:26,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:37:26,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:26,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:37:26,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:37:26,065 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:37:26,637 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 06:37:26,929 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-13 06:37:27,192 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:37:29,274 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-13 06:37:29,586 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-13 06:37:32,455 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-10-13 06:37:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:41,167 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:37:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:37:41,170 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 827 [2020-10-13 06:37:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:41,253 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:37:41,253 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:37:41,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:37:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:37:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:37:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:37:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:37:41,478 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 827 [2020-10-13 06:37:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:41,482 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:37:41,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:37:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:37:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-13 06:37:41,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:41,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:41,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:37:41,541 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash 457133305, now seen corresponding path program 1 times [2020-10-13 06:37:41,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:41,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114287001] [2020-10-13 06:37:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:46,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:46,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-13 06:37:46,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-13 06:37:46,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:37:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:37:46,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:48,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:37:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:37:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:37:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:52,588 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 06:37:52,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114287001] [2020-10-13 06:37:52,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:52,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:37:52,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871997743] [2020-10-13 06:37:52,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:37:52,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:37:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:37:52,593 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:37:57,076 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-13 06:37:57,728 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:37:58,566 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:38:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:07,248 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:38:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:38:07,250 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 846 [2020-10-13 06:38:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:07,261 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:38:07,262 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:38:07,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:38:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:38:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:38:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:38:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:38:07,334 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 846 [2020-10-13 06:38:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:07,335 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:38:07,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:38:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:38:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2020-10-13 06:38:07,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:07,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:07,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:38:07,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:07,350 INFO L82 PathProgramCache]: Analyzing trace with hash -663242913, now seen corresponding path program 1 times [2020-10-13 06:38:07,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:07,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750527224] [2020-10-13 06:38:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 869 [2020-10-13 06:38:12,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:38:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 06:38:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:38:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:38:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:38:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:15,038 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-10-13 06:38:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:38:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:38:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:38:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:38:19,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750527224] [2020-10-13 06:38:19,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:19,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:38:19,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084793678] [2020-10-13 06:38:19,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:38:19,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:38:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:38:19,004 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:38:19,390 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:38:22,871 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:38:23,646 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:38:23,811 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 06:38:24,094 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:38:25,041 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-13 06:38:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:31,006 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:38:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:38:31,011 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 853 [2020-10-13 06:38:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:31,025 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:38:31,025 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:38:31,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:38:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:38:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:38:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:38:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:38:31,095 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 853 [2020-10-13 06:38:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:31,096 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:38:31,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:38:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:38:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-10-13 06:38:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:31,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:31,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:38:31,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash 710227014, now seen corresponding path program 1 times [2020-10-13 06:38:31,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:31,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614990905] [2020-10-13 06:38:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:36,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-13 06:38:36,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:38:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 06:38:36,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:38:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:38:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-13 06:38:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:36,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:38:36,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:38:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:36,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:38:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:38:37,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614990905] [2020-10-13 06:38:37,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:37,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:38:37,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946836616] [2020-10-13 06:38:37,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:38:37,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:37,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:38:37,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:38:37,545 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:38:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:46,446 INFO L93 Difference]: Finished difference Result 5692 states and 8012 transitions. [2020-10-13 06:38:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:38:46,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2020-10-13 06:38:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:46,464 INFO L225 Difference]: With dead ends: 5692 [2020-10-13 06:38:46,465 INFO L226 Difference]: Without dead ends: 3639 [2020-10-13 06:38:46,470 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 06:38:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-10-13 06:38:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2020-10-13 06:38:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-10-13 06:38:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4935 transitions. [2020-10-13 06:38:46,547 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4935 transitions. Word has length 863 [2020-10-13 06:38:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:46,549 INFO L479 AbstractCegarLoop]: Abstraction has 3639 states and 4935 transitions. [2020-10-13 06:38:46,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:38:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4935 transitions. [2020-10-13 06:38:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2020-10-13 06:38:46,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:46,566 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:46,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:38:46,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1947207799, now seen corresponding path program 1 times [2020-10-13 06:38:46,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:46,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820035064] [2020-10-13 06:38:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:51,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 892 [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:38:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:38:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:51,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:51,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:38:51,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:51,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:51,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:51,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:38:51,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:38:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:38:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:51,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:38:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:38:51,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:38:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:38:52,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820035064] [2020-10-13 06:38:52,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:52,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:38:52,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464838208] [2020-10-13 06:38:52,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:38:52,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:38:52,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:38:52,693 INFO L87 Difference]: Start difference. First operand 3639 states and 4935 transitions. Second operand 8 states. [2020-10-13 06:39:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:14,137 INFO L93 Difference]: Finished difference Result 11688 states and 18340 transitions. [2020-10-13 06:39:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:39:14,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 872 [2020-10-13 06:39:14,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:14,183 INFO L225 Difference]: With dead ends: 11688 [2020-10-13 06:39:14,184 INFO L226 Difference]: Without dead ends: 8782 [2020-10-13 06:39:14,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:39:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2020-10-13 06:39:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 8773. [2020-10-13 06:39:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8773 states. [2020-10-13 06:39:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 11861 transitions. [2020-10-13 06:39:14,426 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 11861 transitions. Word has length 872 [2020-10-13 06:39:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:14,426 INFO L479 AbstractCegarLoop]: Abstraction has 8773 states and 11861 transitions. [2020-10-13 06:39:14,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:39:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 11861 transitions. [2020-10-13 06:39:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-13 06:39:14,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:14,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:14,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:39:14,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash 101031743, now seen corresponding path program 1 times [2020-10-13 06:39:14,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:14,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787602148] [2020-10-13 06:39:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:15,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:18,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:19,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-13 06:39:19,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:39:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:39:19,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:39:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:39:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:19,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:39:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:39:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:39:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:39:20,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787602148] [2020-10-13 06:39:20,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:20,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:20,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281000367] [2020-10-13 06:39:20,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:20,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:20,099 INFO L87 Difference]: Start difference. First operand 8773 states and 11861 transitions. Second operand 7 states. [2020-10-13 06:39:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:32,440 INFO L93 Difference]: Finished difference Result 23895 states and 33963 transitions. [2020-10-13 06:39:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:32,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 891 [2020-10-13 06:39:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:32,515 INFO L225 Difference]: With dead ends: 23895 [2020-10-13 06:39:32,515 INFO L226 Difference]: Without dead ends: 15855 [2020-10-13 06:39:32,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:39:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15855 states. [2020-10-13 06:39:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15855 to 15795. [2020-10-13 06:39:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15795 states. [2020-10-13 06:39:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 20820 transitions. [2020-10-13 06:39:32,992 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 20820 transitions. Word has length 891 [2020-10-13 06:39:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:32,992 INFO L479 AbstractCegarLoop]: Abstraction has 15795 states and 20820 transitions. [2020-10-13 06:39:32,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 20820 transitions. [2020-10-13 06:39:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-13 06:39:33,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:33,044 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:39:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:39:33,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash -721923525, now seen corresponding path program 1 times [2020-10-13 06:39:33,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:33,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849113239] [2020-10-13 06:39:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:33,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-13 06:39:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:39:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:39:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:39:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 06:39:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:38,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:38,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:39:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:39:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:39:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:39:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 06:39:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-13 06:39:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:39:40,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849113239] [2020-10-13 06:39:40,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:40,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:40,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118199386] [2020-10-13 06:39:40,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:40,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:40,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:40,159 INFO L87 Difference]: Start difference. First operand 15795 states and 20820 transitions. Second operand 7 states. [2020-10-13 06:39:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:51,153 INFO L93 Difference]: Finished difference Result 42828 states and 57524 transitions. [2020-10-13 06:39:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:39:51,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1049 [2020-10-13 06:39:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:51,251 INFO L225 Difference]: With dead ends: 42828 [2020-10-13 06:39:51,251 INFO L226 Difference]: Without dead ends: 27766 [2020-10-13 06:39:51,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:39:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27766 states. [2020-10-13 06:39:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27766 to 25217. [2020-10-13 06:39:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25217 states. [2020-10-13 06:39:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25217 states to 25217 states and 31958 transitions. [2020-10-13 06:39:51,857 INFO L78 Accepts]: Start accepts. Automaton has 25217 states and 31958 transitions. Word has length 1049 [2020-10-13 06:39:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:51,858 INFO L479 AbstractCegarLoop]: Abstraction has 25217 states and 31958 transitions. [2020-10-13 06:39:51,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 25217 states and 31958 transitions. [2020-10-13 06:39:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2020-10-13 06:39:51,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:51,921 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:51,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:39:51,922 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1730734445, now seen corresponding path program 1 times [2020-10-13 06:39:51,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:51,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489223671] [2020-10-13 06:39:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:39:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 06:39:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:57,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:57,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:57,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:39:57,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:39:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:57,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 06:39:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:39:57,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 06:39:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:39:59,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489223671] [2020-10-13 06:39:59,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:59,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:59,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893354819] [2020-10-13 06:39:59,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:59,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:59,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:59,089 INFO L87 Difference]: Start difference. First operand 25217 states and 31958 transitions. Second operand 7 states. [2020-10-13 06:40:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:17,740 INFO L93 Difference]: Finished difference Result 69457 states and 89682 transitions. [2020-10-13 06:40:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:40:17,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1093 [2020-10-13 06:40:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:17,885 INFO L225 Difference]: With dead ends: 69457 [2020-10-13 06:40:17,885 INFO L226 Difference]: Without dead ends: 44126 [2020-10-13 06:40:17,945 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 06:40:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44126 states. [2020-10-13 06:40:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44126 to 43263. [2020-10-13 06:40:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43263 states. [2020-10-13 06:40:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43263 states to 43263 states and 53901 transitions. [2020-10-13 06:40:18,767 INFO L78 Accepts]: Start accepts. Automaton has 43263 states and 53901 transitions. Word has length 1093 [2020-10-13 06:40:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:18,768 INFO L479 AbstractCegarLoop]: Abstraction has 43263 states and 53901 transitions. [2020-10-13 06:40:18,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:40:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 43263 states and 53901 transitions. [2020-10-13 06:40:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2020-10-13 06:40:18,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:18,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:18,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:40:18,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:18,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2117126927, now seen corresponding path program 1 times [2020-10-13 06:40:18,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:18,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317633728] [2020-10-13 06:40:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1217 [2020-10-13 06:40:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:40:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:40:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 06:40:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:24,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:40:24,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:40:24,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:40:24,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:40:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 06:40:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 06:40:24,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-13 06:40:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:40:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:24,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:40:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:40:24,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:40:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-13 06:40:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:40:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 06:40:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 06:40:25,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317633728] [2020-10-13 06:40:25,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:25,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:40:25,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192348360] [2020-10-13 06:40:25,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:40:25,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:25,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:40:25,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:40:25,435 INFO L87 Difference]: Start difference. First operand 43263 states and 53901 transitions. Second operand 8 states.