/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=BIGGEST --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/Problem12_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:21:12,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:21:12,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:21:12,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:21:12,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:21:12,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:21:12,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:21:12,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:21:12,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:21:12,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:21:12,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:21:12,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:21:12,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:21:12,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:21:12,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:21:12,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:21:12,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:21:12,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:21:12,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:21:12,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:21:12,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:21:12,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:21:12,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:21:12,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:21:12,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:21:12,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:21:12,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:21:12,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:21:12,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:21:12,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:21:12,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:21:12,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:21:12,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:21:12,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:21:12,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:21:12,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:21:12,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:21:12,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:21:12,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:21:12,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:21:12,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:21:12,490 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 [2020-10-12 13:21:12,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:21:12,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:21:12,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:21:12,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:21:12,516 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:21:12,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:21:12,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:21:12,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:21:12,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:21:12,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:21:12,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:21:12,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:21:12,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:21:12,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:21:12,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:21:12,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:21:12,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:21:12,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:21:12,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:21:12,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:21:12,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:21:12,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:21:12,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:21:12,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:21:12,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:21:12,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:21:12,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:21:12,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:21:12,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:21:12,521 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:21:12,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:21:12,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:21:12,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:21:12,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:21:12,856 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:21:12,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-12 13:21:12,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9280076fa/b0eb6f0383174d61846b31d5da755d3c/FLAG454f57d4b [2020-10-12 13:21:13,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:21:13,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-12 13:21:13,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9280076fa/b0eb6f0383174d61846b31d5da755d3c/FLAG454f57d4b [2020-10-12 13:21:14,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9280076fa/b0eb6f0383174d61846b31d5da755d3c [2020-10-12 13:21:14,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:21:14,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:21:14,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:14,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:21:14,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:21:14,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:14" (1/1) ... [2020-10-12 13:21:14,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b0c8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:14, skipping insertion in model container [2020-10-12 13:21:14,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:14" (1/1) ... [2020-10-12 13:21:14,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:21:14,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:21:16,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:16,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:21:16,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:16,900 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:21:16,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16 WrapperNode [2020-10-12 13:21:16,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:16,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:21:16,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:21:16,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:21:16,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:16,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:16,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:17,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:17,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:17,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:17,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (1/1) ... [2020-10-12 13:21:17,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:21:17,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:21:17,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:21:17,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:21:17,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (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 [2020-10-12 13:21:17,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:21:17,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:21:17,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:21:17,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:21:17,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:21:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:21:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:21:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:21:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:21:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:21:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:21:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:21:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:21:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:21:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:21:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:21:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:21:22,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:21:22,934 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:21:22,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:22 BoogieIcfgContainer [2020-10-12 13:21:22,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:21:22,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:21:22,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:21:22,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:21:22,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:21:14" (1/3) ... [2020-10-12 13:21:22,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e48bc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:22, skipping insertion in model container [2020-10-12 13:21:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:16" (2/3) ... [2020-10-12 13:21:22,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e48bc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:22, skipping insertion in model container [2020-10-12 13:21:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:22" (3/3) ... [2020-10-12 13:21:22,955 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label15.c [2020-10-12 13:21:22,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:21:22,978 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:21:22,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:21:23,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:21:23,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:21:23,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:21:23,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:21:23,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:21:23,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:21:23,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:21:23,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:21:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:21:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 13:21:23,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:23,081 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] [2020-10-12 13:21:23,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:23,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1064368205, now seen corresponding path program 1 times [2020-10-12 13:21:23,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:23,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136252177] [2020-10-12 13:21:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:23,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 13:21:23,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-12 13:21:23,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:21:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 13:21:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:21:23,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:23,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:23,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:23,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:21:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:21:24,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136252177] [2020-10-12 13:21:24,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:21:24,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:21:24,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090881882] [2020-10-12 13:21:24,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:21:24,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:24,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:21:24,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:21:24,041 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:21:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:33,742 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:21:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:21:33,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-12 13:21:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:33,801 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:21:33,801 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:21:33,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:21:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:21:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:21:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:21:34,008 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 60 [2020-10-12 13:21:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:34,009 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:21:34,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:21:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:21:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 13:21:34,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:34,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:34,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:21:34,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2071374165, now seen corresponding path program 1 times [2020-10-12 13:21:34,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:34,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855259441] [2020-10-12 13:21:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:21:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:21:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-12 13:21:35,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:21:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:21:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:21:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:21:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:21:35,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 13:21:35,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:21:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:21:35,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855259441] [2020-10-12 13:21:35,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:35,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:35,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422506196] [2020-10-12 13:21:35,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:21:35,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:35,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:21:35,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:35,901 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:21:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:47,131 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-12 13:21:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:21:47,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-12 13:21:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:47,156 INFO L225 Difference]: With dead ends: 4690 [2020-10-12 13:21:47,156 INFO L226 Difference]: Without dead ends: 3143 [2020-10-12 13:21:47,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:21:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-12 13:21:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-12 13:21:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-12 13:21:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-12 13:21:47,262 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 135 [2020-10-12 13:21:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:47,263 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-12 13:21:47,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:21:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-12 13:21:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 13:21:47,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:47,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:21:47,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:21:47,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1449856243, now seen corresponding path program 1 times [2020-10-12 13:21:47,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:47,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764096949] [2020-10-12 13:21:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:21:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:21:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-12 13:21:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:21:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 13:21:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:21:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:48,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:48,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:21:48,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 13:21:48,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:21:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:21:48,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764096949] [2020-10-12 13:21:48,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:48,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:48,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90408771] [2020-10-12 13:21:48,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:21:48,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:21:48,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:48,834 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 6 states. [2020-10-12 13:22:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:00,809 INFO L93 Difference]: Finished difference Result 9467 states and 13673 transitions. [2020-10-12 13:22:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:22:00,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-12 13:22:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:00,854 INFO L225 Difference]: With dead ends: 9467 [2020-10-12 13:22:00,855 INFO L226 Difference]: Without dead ends: 6348 [2020-10-12 13:22:00,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:22:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2020-10-12 13:22:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6311. [2020-10-12 13:22:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6311 states. [2020-10-12 13:22:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 8106 transitions. [2020-10-12 13:22:01,096 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 8106 transitions. Word has length 139 [2020-10-12 13:22:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:01,099 INFO L479 AbstractCegarLoop]: Abstraction has 6311 states and 8106 transitions. [2020-10-12 13:22:01,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:22:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 8106 transitions. [2020-10-12 13:22:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 13:22:01,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:01,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:22:01,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:22:01,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1957361057, now seen corresponding path program 1 times [2020-10-12 13:22:01,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:01,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631316831] [2020-10-12 13:22:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:02,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:02,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 13:22:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-12 13:22:02,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:22:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:22:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:02,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:02,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:22:02,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:02,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:02,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:22:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 13:22:02,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:22:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:22:02,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631316831] [2020-10-12 13:22:02,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:22:02,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:22:02,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521921689] [2020-10-12 13:22:02,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:02,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:02,847 INFO L87 Difference]: Start difference. First operand 6311 states and 8106 transitions. Second operand 7 states. [2020-10-12 13:22:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:18,284 INFO L93 Difference]: Finished difference Result 18428 states and 24202 transitions. [2020-10-12 13:22:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:22:18,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-12 13:22:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:18,358 INFO L225 Difference]: With dead ends: 18428 [2020-10-12 13:22:18,359 INFO L226 Difference]: Without dead ends: 12123 [2020-10-12 13:22:18,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:22:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12123 states. [2020-10-12 13:22:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12123 to 11204. [2020-10-12 13:22:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11204 states. [2020-10-12 13:22:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11204 states to 11204 states and 14027 transitions. [2020-10-12 13:22:18,750 INFO L78 Accepts]: Start accepts. Automaton has 11204 states and 14027 transitions. Word has length 145 [2020-10-12 13:22:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:18,751 INFO L479 AbstractCegarLoop]: Abstraction has 11204 states and 14027 transitions. [2020-10-12 13:22:18,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 11204 states and 14027 transitions. [2020-10-12 13:22:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 13:22:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:18,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:22:18,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:22:18,759 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1629560792, now seen corresponding path program 1 times [2020-10-12 13:22:18,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:18,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311038119] [2020-10-12 13:22:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:20,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:20,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 13:22:20,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-10-12 13:22:20,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:22:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:21,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:21,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:22:21,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:21,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:22:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 13:22:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:22:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:22:21,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311038119] [2020-10-12 13:22:21,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:22:21,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:22:21,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383208197] [2020-10-12 13:22:21,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:21,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:21,815 INFO L87 Difference]: Start difference. First operand 11204 states and 14027 transitions. Second operand 7 states. [2020-10-12 13:22:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:33,866 INFO L93 Difference]: Finished difference Result 17438 states and 22547 transitions. [2020-10-12 13:22:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:22:33,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-12 13:22:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:33,916 INFO L225 Difference]: With dead ends: 17438 [2020-10-12 13:22:33,916 INFO L226 Difference]: Without dead ends: 11701 [2020-10-12 13:22:33,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:22:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11701 states. [2020-10-12 13:22:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11701 to 11312. [2020-10-12 13:22:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11312 states. [2020-10-12 13:22:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 14183 transitions. [2020-10-12 13:22:34,192 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 14183 transitions. Word has length 208 [2020-10-12 13:22:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:34,193 INFO L479 AbstractCegarLoop]: Abstraction has 11312 states and 14183 transitions. [2020-10-12 13:22:34,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 14183 transitions. [2020-10-12 13:22:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-12 13:22:34,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:34,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:34,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:22:34,198 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:34,199 INFO L82 PathProgramCache]: Analyzing trace with hash 634631824, now seen corresponding path program 1 times [2020-10-12 13:22:34,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:34,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448872771] [2020-10-12 13:22:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-12 13:22:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:22:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1513 [2020-10-12 13:22:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-12 13:22:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 13:22:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:35,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:35,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:22:35,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:35,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:22:35,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:35,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:22:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:22:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:36,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:22:36,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:22:36,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:22:36,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 13:22:36,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448872771] [2020-10-12 13:22:36,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:36,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:22:36,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027895020] [2020-10-12 13:22:36,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:22:36,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:22:36,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:22:36,376 INFO L87 Difference]: Start difference. First operand 11312 states and 14183 transitions. Second operand 5 states. [2020-10-12 13:22:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:46,382 INFO L93 Difference]: Finished difference Result 17364 states and 22403 transitions. [2020-10-12 13:22:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:22:46,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-12 13:22:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:46,423 INFO L225 Difference]: With dead ends: 17364 [2020-10-12 13:22:46,424 INFO L226 Difference]: Without dead ends: 11382 [2020-10-12 13:22:46,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11382 states. [2020-10-12 13:22:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11382 to 11299. [2020-10-12 13:22:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11299 states. [2020-10-12 13:22:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 13816 transitions. [2020-10-12 13:22:46,697 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 13816 transitions. Word has length 235 [2020-10-12 13:22:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:46,698 INFO L479 AbstractCegarLoop]: Abstraction has 11299 states and 13816 transitions. [2020-10-12 13:22:46,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:22:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 13816 transitions. [2020-10-12 13:22:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 13:22:46,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:46,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:46,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:22:46,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:46,704 INFO L82 PathProgramCache]: Analyzing trace with hash -548812383, now seen corresponding path program 1 times [2020-10-12 13:22:46,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:46,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048629854] [2020-10-12 13:22:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 13:22:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 13:22:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-12 13:22:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:22:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:48,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:48,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:48,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:22:48,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:48,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:48,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:48,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:22:48,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:22:48,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:48,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:22:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:48,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:22:48,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:22:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:22:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 13:22:48,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048629854] [2020-10-12 13:22:48,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:48,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:22:48,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465602032] [2020-10-12 13:22:48,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:22:48,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:22:48,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:48,756 INFO L87 Difference]: Start difference. First operand 11299 states and 13816 transitions. Second operand 6 states. [2020-10-12 13:23:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:03,987 INFO L93 Difference]: Finished difference Result 26692 states and 33791 transitions. [2020-10-12 13:23:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:03,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 248 [2020-10-12 13:23:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:04,062 INFO L225 Difference]: With dead ends: 26692 [2020-10-12 13:23:04,062 INFO L226 Difference]: Without dead ends: 16166 [2020-10-12 13:23:04,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16166 states. [2020-10-12 13:23:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16166 to 15290. [2020-10-12 13:23:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15290 states. [2020-10-12 13:23:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 18525 transitions. [2020-10-12 13:23:04,396 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 18525 transitions. Word has length 248 [2020-10-12 13:23:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:04,397 INFO L479 AbstractCegarLoop]: Abstraction has 15290 states and 18525 transitions. [2020-10-12 13:23:04,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:23:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 18525 transitions. [2020-10-12 13:23:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 13:23:04,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:04,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:04,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:23:04,405 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1252050464, now seen corresponding path program 1 times [2020-10-12 13:23:04,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:04,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383081664] [2020-10-12 13:23:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 13:23:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-12 13:23:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:23:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:23:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:23:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:23:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:23:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:23:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:06,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:23:06,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 13:23:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:23:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:23:06,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383081664] [2020-10-12 13:23:06,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:06,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:23:06,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478842668] [2020-10-12 13:23:06,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:23:06,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:06,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:23:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:06,344 INFO L87 Difference]: Start difference. First operand 15290 states and 18525 transitions. Second operand 8 states. [2020-10-12 13:23:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:30,089 INFO L93 Difference]: Finished difference Result 34117 states and 44661 transitions. [2020-10-12 13:23:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:23:30,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-12 13:23:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:30,150 INFO L225 Difference]: With dead ends: 34117 [2020-10-12 13:23:30,150 INFO L226 Difference]: Without dead ends: 17219 [2020-10-12 13:23:30,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:23:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17219 states. [2020-10-12 13:23:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17219 to 16972. [2020-10-12 13:23:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16972 states. [2020-10-12 13:23:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 21302 transitions. [2020-10-12 13:23:30,493 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 21302 transitions. Word has length 259 [2020-10-12 13:23:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:30,494 INFO L479 AbstractCegarLoop]: Abstraction has 16972 states and 21302 transitions. [2020-10-12 13:23:30,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:23:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 21302 transitions. [2020-10-12 13:23:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 13:23:30,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:30,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:30,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:23:30,501 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:30,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1363302719, now seen corresponding path program 1 times [2020-10-12 13:23:30,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:30,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610318335] [2020-10-12 13:23:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 13:23:31,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-12 13:23:31,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-12 13:23:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:23:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:31,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:23:31,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:23:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:23:31,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:23:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 13:23:31,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610318335] [2020-10-12 13:23:31,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:31,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:23:31,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317651184] [2020-10-12 13:23:31,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:23:31,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:31,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:23:31,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:23:31,639 INFO L87 Difference]: Start difference. First operand 16972 states and 21302 transitions. Second operand 5 states. [2020-10-12 13:23:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:45,128 INFO L93 Difference]: Finished difference Result 33245 states and 41984 transitions. [2020-10-12 13:23:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:23:45,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-12 13:23:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:45,192 INFO L225 Difference]: With dead ends: 33245 [2020-10-12 13:23:45,192 INFO L226 Difference]: Without dead ends: 17046 [2020-10-12 13:23:45,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17046 states. [2020-10-12 13:23:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17046 to 16972. [2020-10-12 13:23:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16972 states. [2020-10-12 13:23:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 19748 transitions. [2020-10-12 13:23:45,523 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 19748 transitions. Word has length 308 [2020-10-12 13:23:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:45,524 INFO L479 AbstractCegarLoop]: Abstraction has 16972 states and 19748 transitions. [2020-10-12 13:23:45,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:23:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 19748 transitions. [2020-10-12 13:23:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-12 13:23:45,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:45,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:45,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:23:45,542 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1188540087, now seen corresponding path program 1 times [2020-10-12 13:23:45,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:45,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102222260] [2020-10-12 13:23:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-12 13:23:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3148 [2020-10-12 13:23:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-12 13:23:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:23:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:23:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:23:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:23:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:23:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:49,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-12 13:23:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:23:49,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:23:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:23:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-12 13:23:49,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102222260] [2020-10-12 13:23:49,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:49,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:23:49,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914845055] [2020-10-12 13:23:49,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:23:49,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:23:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:23:49,465 INFO L87 Difference]: Start difference. First operand 16972 states and 19748 transitions. Second operand 5 states. [2020-10-12 13:24:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:06,732 INFO L93 Difference]: Finished difference Result 34965 states and 41393 transitions. [2020-10-12 13:24:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:24:06,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-12 13:24:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:06,823 INFO L225 Difference]: With dead ends: 34965 [2020-10-12 13:24:06,823 INFO L226 Difference]: Without dead ends: 25044 [2020-10-12 13:24:06,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:24:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25044 states. [2020-10-12 13:24:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25044 to 24943. [2020-10-12 13:24:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24943 states. [2020-10-12 13:24:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 28776 transitions. [2020-10-12 13:24:08,302 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 28776 transitions. Word has length 399 [2020-10-12 13:24:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:08,303 INFO L479 AbstractCegarLoop]: Abstraction has 24943 states and 28776 transitions. [2020-10-12 13:24:08,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:24:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 28776 transitions. [2020-10-12 13:24:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-12 13:24:08,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:08,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:08,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:24:08,313 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash 821742664, now seen corresponding path program 1 times [2020-10-12 13:24:08,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:08,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788749704] [2020-10-12 13:24:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:11,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:11,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-12 13:24:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:24:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3474 [2020-10-12 13:24:11,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:24:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-12 13:24:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:12,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:24:12,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:12,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:12,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:24:12,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:24:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:24:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:24:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:12,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:24:12,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:24:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:24:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:24:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-12 13:24:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:12,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:24:12,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 13:24:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:24:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 366 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:24:13,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788749704] [2020-10-12 13:24:13,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:13,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:24:13,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119738863] [2020-10-12 13:24:13,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:24:13,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:24:13,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:24:13,184 INFO L87 Difference]: Start difference. First operand 24943 states and 28776 transitions. Second operand 8 states. [2020-10-12 13:24:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:46,432 INFO L93 Difference]: Finished difference Result 71320 states and 85666 transitions. [2020-10-12 13:24:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:24:46,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 418 [2020-10-12 13:24:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:46,566 INFO L225 Difference]: With dead ends: 71320 [2020-10-12 13:24:46,566 INFO L226 Difference]: Without dead ends: 47150 [2020-10-12 13:24:46,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:24:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2020-10-12 13:24:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 46749. [2020-10-12 13:24:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46749 states. [2020-10-12 13:24:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46749 states to 46749 states and 53920 transitions. [2020-10-12 13:24:47,699 INFO L78 Accepts]: Start accepts. Automaton has 46749 states and 53920 transitions. Word has length 418 [2020-10-12 13:24:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:47,699 INFO L479 AbstractCegarLoop]: Abstraction has 46749 states and 53920 transitions. [2020-10-12 13:24:47,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:24:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 46749 states and 53920 transitions. [2020-10-12 13:24:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-12 13:24:47,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:47,712 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 13:24:47,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:24:47,712 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:47,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1890403878, now seen corresponding path program 1 times [2020-10-12 13:24:47,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:47,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875100484] [2020-10-12 13:24:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:52,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:52,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-12 13:24:52,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:24:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 13:24:52,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-12 13:24:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:24:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:52,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:52,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:52,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:24:52,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:24:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 13:24:53,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-12 13:24:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:24:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:24:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:24:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:24:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:24:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:24:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:24:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:24:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 505 proven. 6 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 13:24:53,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875100484] [2020-10-12 13:24:53,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:53,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:24:53,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377658497] [2020-10-12 13:24:53,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:24:53,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:53,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:24:53,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:24:53,557 INFO L87 Difference]: Start difference. First operand 46749 states and 53920 transitions. Second operand 7 states.