/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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:22:52,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:22:52,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:22:52,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:22:52,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:22:52,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:22:52,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:22:52,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:22:52,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:22:52,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:22:52,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:22:52,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:22:52,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:22:52,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:22:52,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:22:52,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:22:52,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:22:52,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:22:52,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:22:52,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:22:52,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:22:52,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:22:52,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:22:52,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:22:52,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:22:52,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:22:52,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:22:52,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:22:52,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:22:52,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:22:52,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:22:52,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:22:52,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:22:52,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:22:52,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:22:52,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:22:52,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:22:52,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:22:52,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:22:52,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:22:52,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:22:52,360 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 13:22:52,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:22:52,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:22:52,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:22:52,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:22:52,383 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:22:52,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:22:52,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:22:52,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:22:52,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:22:52,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:22:52,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:22:52,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:22:52,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:22:52,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:22:52,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:22:52,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:22:52,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:22:52,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:22:52,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:22:52,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:22:52,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:22:52,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:22:52,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:22:52,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:22:52,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:22:52,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:22:52,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:22:52,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:22:52,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:22:52,388 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 13:22:52,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:22:52,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:22:52,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:22:52,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:22:52,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:22:52,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-12 13:22:52,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab14dab7/d41a30658b8340caae685a495b8454b2/FLAG8d9b8e8f3 [2020-10-12 13:22:53,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:22:53,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-12 13:22:53,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab14dab7/d41a30658b8340caae685a495b8454b2/FLAG8d9b8e8f3 [2020-10-12 13:22:53,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bab14dab7/d41a30658b8340caae685a495b8454b2 [2020-10-12 13:22:53,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:22:53,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:22:53,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:22:53,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:22:53,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:22:53,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:22:53" (1/1) ... [2020-10-12 13:22:53,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:53, skipping insertion in model container [2020-10-12 13:22:53,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:22:53" (1/1) ... [2020-10-12 13:22:53,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:22:53,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:22:55,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:22:55,359 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:22:56,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:22:56,090 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:22:56,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56 WrapperNode [2020-10-12 13:22:56,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:22:56,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:22:56,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:22:56,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:22:56,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (1/1) ... [2020-10-12 13:22:56,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:22:56,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:22:56,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:22:56,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:22:56,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (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 13:22:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:22:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:22:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:22:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:22:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:22:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:22:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:22:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:22:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:22:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:22:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:22:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:23:00,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:23:00,919 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:23:00,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:23:00 BoogieIcfgContainer [2020-10-12 13:23:00,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:23:00,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:23:00,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:23:00,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:23:00,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:22:53" (1/3) ... [2020-10-12 13:23:00,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:23:00, skipping insertion in model container [2020-10-12 13:23:00,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:56" (2/3) ... [2020-10-12 13:23:00,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:23:00, skipping insertion in model container [2020-10-12 13:23:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:23:00" (3/3) ... [2020-10-12 13:23:00,953 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2020-10-12 13:23:00,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:23:00,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:23:00,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:23:01,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:23:01,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:23:01,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:23:01,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:23:01,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:23:01,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:23:01,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:23:01,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:23:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:23:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 13:23:01,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:01,060 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] [2020-10-12 13:23:01,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -996622542, now seen corresponding path program 1 times [2020-10-12 13:23:01,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:01,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835590216] [2020-10-12 13:23:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 13:23:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-12 13:23:01,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 13:23:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:23:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:23:01,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:01,633 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 13:23:01,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835590216] [2020-10-12 13:23:01,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:23:01,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:23:01,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783414430] [2020-10-12 13:23:01,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:23:01,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:23:01,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:23:01,658 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:23:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:09,344 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:23:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:23:09,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 13:23:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:09,400 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:23:09,400 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:23:09,414 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 13:23:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:23:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:23:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:23:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-12 13:23:09,664 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 23 [2020-10-12 13:23:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:09,665 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-12 13:23:09,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:23:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-12 13:23:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 13:23:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:09,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:09,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:23:09,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:09,672 INFO L82 PathProgramCache]: Analyzing trace with hash -828064321, now seen corresponding path program 1 times [2020-10-12 13:23:09,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819692064] [2020-10-12 13:23:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:10,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:23:10,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-12 13:23:10,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:23:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:23:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:10,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:23:10,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:10,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:23:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 13:23:10,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:23:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:23:10,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819692064] [2020-10-12 13:23:10,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:10,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:23:10,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108917389] [2020-10-12 13:23:10,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:10,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:10,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:10,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:10,978 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 7 states. [2020-10-12 13:23:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:20,185 INFO L93 Difference]: Finished difference Result 4714 states and 8354 transitions. [2020-10-12 13:23:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:20,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-12 13:23:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:20,209 INFO L225 Difference]: With dead ends: 4714 [2020-10-12 13:23:20,209 INFO L226 Difference]: Without dead ends: 3167 [2020-10-12 13:23:20,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:23:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2020-10-12 13:23:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3114. [2020-10-12 13:23:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3114 states. [2020-10-12 13:23:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 5328 transitions. [2020-10-12 13:23:20,299 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 5328 transitions. Word has length 92 [2020-10-12 13:23:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:20,300 INFO L479 AbstractCegarLoop]: Abstraction has 3114 states and 5328 transitions. [2020-10-12 13:23:20,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 5328 transitions. [2020-10-12 13:23:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 13:23:20,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:20,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:20,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:23:20,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:20,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1344233963, now seen corresponding path program 1 times [2020-10-12 13:23:20,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:20,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506484387] [2020-10-12 13:23:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:20,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:20,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:23:20,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 13:23:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:23:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 13:23:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:20,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:23:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:23:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:23:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 13:23:20,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:23:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:23:20,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506484387] [2020-10-12 13:23:20,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:20,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:23:20,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436848596] [2020-10-12 13:23:20,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:23:20,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:20,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:23:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:23:20,796 INFO L87 Difference]: Start difference. First operand 3114 states and 5328 transitions. Second operand 5 states. [2020-10-12 13:23:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:30,973 INFO L93 Difference]: Finished difference Result 7813 states and 13659 transitions. [2020-10-12 13:23:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:23:30,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 13:23:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:30,999 INFO L225 Difference]: With dead ends: 7813 [2020-10-12 13:23:30,999 INFO L226 Difference]: Without dead ends: 4705 [2020-10-12 13:23:31,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4705 states. [2020-10-12 13:23:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4705 to 4699. [2020-10-12 13:23:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4699 states. [2020-10-12 13:23:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 7887 transitions. [2020-10-12 13:23:31,118 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 7887 transitions. Word has length 98 [2020-10-12 13:23:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:31,119 INFO L479 AbstractCegarLoop]: Abstraction has 4699 states and 7887 transitions. [2020-10-12 13:23:31,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:23:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 7887 transitions. [2020-10-12 13:23:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 13:23:31,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:31,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:31,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:23:31,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1643784415, now seen corresponding path program 1 times [2020-10-12 13:23:31,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:31,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730407323] [2020-10-12 13:23:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:23:31,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:31,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-12 13:23:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:23:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:32,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:23:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 13:23:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:23:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:23:32,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730407323] [2020-10-12 13:23:32,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:23:32,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:23:32,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053568900] [2020-10-12 13:23:32,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:32,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:32,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:32,372 INFO L87 Difference]: Start difference. First operand 4699 states and 7887 transitions. Second operand 7 states. [2020-10-12 13:23:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:43,519 INFO L93 Difference]: Finished difference Result 14287 states and 24452 transitions. [2020-10-12 13:23:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:23:43,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-12 13:23:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:43,578 INFO L225 Difference]: With dead ends: 14287 [2020-10-12 13:23:43,579 INFO L226 Difference]: Without dead ends: 9594 [2020-10-12 13:23:43,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:23:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9594 states. [2020-10-12 13:23:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9594 to 9448. [2020-10-12 13:23:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9448 states. [2020-10-12 13:23:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9448 states to 9448 states and 14639 transitions. [2020-10-12 13:23:43,937 INFO L78 Accepts]: Start accepts. Automaton has 9448 states and 14639 transitions. Word has length 108 [2020-10-12 13:23:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:43,937 INFO L479 AbstractCegarLoop]: Abstraction has 9448 states and 14639 transitions. [2020-10-12 13:23:43,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9448 states and 14639 transitions. [2020-10-12 13:23:43,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 13:23:43,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:43,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:23:43,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:23:43,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:43,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1124344150, now seen corresponding path program 1 times [2020-10-12 13:23:43,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:43,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246107915] [2020-10-12 13:23:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:47,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:47,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-12 13:23:47,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:23:47,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3864 [2020-10-12 13:23:47,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:23:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:23:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:48,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:48,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:23:48,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:23:48,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:23:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 13:23:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:48,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:23:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:23:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 13:23:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:48,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246107915] [2020-10-12 13:23:48,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:48,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:48,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223441534] [2020-10-12 13:23:48,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:48,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:48,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:48,371 INFO L87 Difference]: Start difference. First operand 9448 states and 14639 transitions. Second operand 7 states. [2020-10-12 13:24:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:00,401 INFO L93 Difference]: Finished difference Result 23928 states and 37897 transitions. [2020-10-12 13:24:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:24:00,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-12 13:24:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:00,482 INFO L225 Difference]: With dead ends: 23928 [2020-10-12 13:24:00,482 INFO L226 Difference]: Without dead ends: 14486 [2020-10-12 13:24:00,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:24:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14486 states. [2020-10-12 13:24:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 13513. [2020-10-12 13:24:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13513 states. [2020-10-12 13:24:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 19422 transitions. [2020-10-12 13:24:01,059 INFO L78 Accepts]: Start accepts. Automaton has 13513 states and 19422 transitions. Word has length 181 [2020-10-12 13:24:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:01,060 INFO L479 AbstractCegarLoop]: Abstraction has 13513 states and 19422 transitions. [2020-10-12 13:24:01,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:24:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 13513 states and 19422 transitions. [2020-10-12 13:24:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 13:24:01,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:01,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:01,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:24:01,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1948985251, now seen corresponding path program 1 times [2020-10-12 13:24:01,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:01,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514539904] [2020-10-12 13:24:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 13:24:06,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:24:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 13:24:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:24:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:24:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 13:24:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:06,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:24:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:24:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:24:06,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:06,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:24:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:24:06,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 13:24:06,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:24:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:24:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:24:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:24:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 13:24:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 53 proven. 206 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 13:24:06,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514539904] [2020-10-12 13:24:06,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:06,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:24:06,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024010003] [2020-10-12 13:24:06,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:24:06,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:06,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:24:06,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:24:06,806 INFO L87 Difference]: Start difference. First operand 13513 states and 19422 transitions. Second operand 8 states. [2020-10-12 13:24:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:20,790 INFO L93 Difference]: Finished difference Result 39822 states and 61170 transitions. [2020-10-12 13:24:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:24:20,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-12 13:24:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:20,891 INFO L225 Difference]: With dead ends: 39822 [2020-10-12 13:24:20,891 INFO L226 Difference]: Without dead ends: 26315 [2020-10-12 13:24:20,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:24:20,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26315 states. [2020-10-12 13:24:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26315 to 25168. [2020-10-12 13:24:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25168 states. [2020-10-12 13:24:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25168 states to 25168 states and 35323 transitions. [2020-10-12 13:24:21,597 INFO L78 Accepts]: Start accepts. Automaton has 25168 states and 35323 transitions. Word has length 256 [2020-10-12 13:24:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:21,598 INFO L479 AbstractCegarLoop]: Abstraction has 25168 states and 35323 transitions. [2020-10-12 13:24:21,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:24:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25168 states and 35323 transitions. [2020-10-12 13:24:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-12 13:24:21,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:21,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:21,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:24:21,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1264411618, now seen corresponding path program 1 times [2020-10-12 13:24:21,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:21,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206709217] [2020-10-12 13:24:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 13:24:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:24:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4120 [2020-10-12 13:24:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-12 13:24:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:24:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:25,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:25,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:24:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:25,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:25,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:24:25,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:25,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:24:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:24:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:24:26,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-12 13:24:26,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:24:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 13:24:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:24:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 13:24:26,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:24:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 17 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 13:24:26,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206709217] [2020-10-12 13:24:26,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:26,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:24:26,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866287127] [2020-10-12 13:24:26,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:24:26,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:26,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:24:26,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:24:26,697 INFO L87 Difference]: Start difference. First operand 25168 states and 35323 transitions. Second operand 6 states. [2020-10-12 13:24:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:42,308 INFO L93 Difference]: Finished difference Result 53930 states and 83245 transitions. [2020-10-12 13:24:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:24:42,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 285 [2020-10-12 13:24:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:42,484 INFO L225 Difference]: With dead ends: 53930 [2020-10-12 13:24:42,484 INFO L226 Difference]: Without dead ends: 39110 [2020-10-12 13:24:42,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:24:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39110 states. [2020-10-12 13:24:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39110 to 38874. [2020-10-12 13:24:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38874 states. [2020-10-12 13:24:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38874 states to 38874 states and 54010 transitions. [2020-10-12 13:24:44,943 INFO L78 Accepts]: Start accepts. Automaton has 38874 states and 54010 transitions. Word has length 285 [2020-10-12 13:24:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:44,944 INFO L479 AbstractCegarLoop]: Abstraction has 38874 states and 54010 transitions. [2020-10-12 13:24:44,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:24:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 38874 states and 54010 transitions. [2020-10-12 13:24:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 13:24:44,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:44,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:24:44,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:24:44,954 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash 59355050, now seen corresponding path program 1 times [2020-10-12 13:24:44,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:44,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461328620] [2020-10-12 13:24:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 13:24:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:24:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4219 [2020-10-12 13:24:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-12 13:24:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:24:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:49,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:24:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:49,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:24:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:24:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:24:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:24:49,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:24:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:24:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-12 13:24:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:24:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:24:49,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 13:24:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 184 proven. 17 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 13:24:50,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461328620] [2020-10-12 13:24:50,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:50,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:24:50,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420030935] [2020-10-12 13:24:50,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:24:50,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:24:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:24:50,009 INFO L87 Difference]: Start difference. First operand 38874 states and 54010 transitions. Second operand 6 states. [2020-10-12 13:25:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:04,055 INFO L93 Difference]: Finished difference Result 80859 states and 116132 transitions. [2020-10-12 13:25:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:25:04,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 287 [2020-10-12 13:25:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:04,300 INFO L225 Difference]: With dead ends: 80859 [2020-10-12 13:25:04,301 INFO L226 Difference]: Without dead ends: 52333 [2020-10-12 13:25:04,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 13:25:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52333 states. [2020-10-12 13:25:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52333 to 38876. [2020-10-12 13:25:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38876 states. [2020-10-12 13:25:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38876 states to 38876 states and 54025 transitions. [2020-10-12 13:25:07,233 INFO L78 Accepts]: Start accepts. Automaton has 38876 states and 54025 transitions. Word has length 287 [2020-10-12 13:25:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:07,234 INFO L479 AbstractCegarLoop]: Abstraction has 38876 states and 54025 transitions. [2020-10-12 13:25:07,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:25:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 38876 states and 54025 transitions. [2020-10-12 13:25:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 13:25:07,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:07,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:25:07,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:25:07,252 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1566662270, now seen corresponding path program 1 times [2020-10-12 13:25:07,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:07,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020224098] [2020-10-12 13:25:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:25:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4098 [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 13:25:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:25:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:11,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:11,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:25:11,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:25:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:25:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:25:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:25:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:25:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:25:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 13:25:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:25:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:25:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:25:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:12,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:12,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 13:25:12,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 13:25:12,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:25:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 13:25:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:25:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 13:25:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:12,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:25:12,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:25:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 13:25:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 138 proven. 57 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 13:25:12,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020224098] [2020-10-12 13:25:12,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:25:12,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:25:12,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43877103] [2020-10-12 13:25:12,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:25:12,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:25:12,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:25:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:25:12,688 INFO L87 Difference]: Start difference. First operand 38876 states and 54025 transitions. Second operand 9 states. [2020-10-12 13:25:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:31,649 INFO L93 Difference]: Finished difference Result 94471 states and 133757 transitions. [2020-10-12 13:25:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:25:31,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 293 [2020-10-12 13:25:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:31,811 INFO L225 Difference]: With dead ends: 94471 [2020-10-12 13:25:31,811 INFO L226 Difference]: Without dead ends: 65943 [2020-10-12 13:25:31,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:25:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65943 states. [2020-10-12 13:25:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65943 to 39009. [2020-10-12 13:25:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39009 states. [2020-10-12 13:25:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39009 states to 39009 states and 53897 transitions. [2020-10-12 13:25:32,998 INFO L78 Accepts]: Start accepts. Automaton has 39009 states and 53897 transitions. Word has length 293 [2020-10-12 13:25:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:32,999 INFO L479 AbstractCegarLoop]: Abstraction has 39009 states and 53897 transitions. [2020-10-12 13:25:32,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:25:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 39009 states and 53897 transitions. [2020-10-12 13:25:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-12 13:25:33,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:33,015 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:25:33,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:25:33,015 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash 492824942, now seen corresponding path program 1 times [2020-10-12 13:25:33,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:33,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938192598] [2020-10-12 13:25:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-12 13:25:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 13:25:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 13:25:38,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:25:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-12 13:25:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 13:25:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:25:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:25:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:25:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:25:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:25:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:25:38,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 13:25:38,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:38,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:25:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:25:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:25:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:25:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:25:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:25:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 13:25:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:25:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:25:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 13:25:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:25:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:25:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:38,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:25:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:25:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 13:25:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 10 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:25:38,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938192598] [2020-10-12 13:25:38,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:25:38,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:25:38,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241308334] [2020-10-12 13:25:38,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:25:38,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:25:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:25:38,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:25:38,980 INFO L87 Difference]: Start difference. First operand 39009 states and 53897 transitions. Second operand 9 states. [2020-10-12 13:26:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:26:04,409 INFO L93 Difference]: Finished difference Result 91842 states and 128215 transitions. [2020-10-12 13:26:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 13:26:04,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 351 [2020-10-12 13:26:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:26:04,520 INFO L225 Difference]: With dead ends: 91842 [2020-10-12 13:26:04,521 INFO L226 Difference]: Without dead ends: 50391 [2020-10-12 13:26:04,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-12 13:26:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50391 states. [2020-10-12 13:26:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50391 to 49283. [2020-10-12 13:26:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49283 states. [2020-10-12 13:26:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49283 states to 49283 states and 59849 transitions. [2020-10-12 13:26:05,560 INFO L78 Accepts]: Start accepts. Automaton has 49283 states and 59849 transitions. Word has length 351 [2020-10-12 13:26:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:26:05,560 INFO L479 AbstractCegarLoop]: Abstraction has 49283 states and 59849 transitions. [2020-10-12 13:26:05,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:26:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 49283 states and 59849 transitions. [2020-10-12 13:26:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-12 13:26:05,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:26:05,577 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-12 13:26:05,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:26:05,578 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:26:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:26:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2044919934, now seen corresponding path program 1 times [2020-10-12 13:26:05,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:26:05,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403796161] [2020-10-12 13:26:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:26:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:26:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:26:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:26:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:26:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:10,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:26:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:26:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:26:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:10,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:10,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:26:10,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:26:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:26:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:11,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:11,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:26:11,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:26:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:26:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:26:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:26:11,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-12 13:26:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:11,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:26:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:26:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:26:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 13:26:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:26:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-12 13:26:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:26:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 13:26:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:26:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 64 proven. 215 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-12 13:26:11,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403796161] [2020-10-12 13:26:11,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:26:11,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:26:11,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342784435] [2020-10-12 13:26:11,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:26:11,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:26:11,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:26:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:26:11,818 INFO L87 Difference]: Start difference. First operand 49283 states and 59849 transitions. Second operand 7 states. [2020-10-12 13:26:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:26:26,904 INFO L93 Difference]: Finished difference Result 87191 states and 103770 transitions. [2020-10-12 13:26:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:26:26,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-12 13:26:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:26:26,989 INFO L225 Difference]: With dead ends: 87191 [2020-10-12 13:26:26,989 INFO L226 Difference]: Without dead ends: 49617 [2020-10-12 13:26:27,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:26:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49617 states. [2020-10-12 13:26:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49617 to 49255. [2020-10-12 13:26:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49255 states. [2020-10-12 13:26:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49255 states to 49255 states and 58349 transitions. [2020-10-12 13:26:28,070 INFO L78 Accepts]: Start accepts. Automaton has 49255 states and 58349 transitions. Word has length 401 [2020-10-12 13:26:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:26:28,071 INFO L479 AbstractCegarLoop]: Abstraction has 49255 states and 58349 transitions. [2020-10-12 13:26:28,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:26:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 49255 states and 58349 transitions. [2020-10-12 13:26:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-12 13:26:28,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:26:28,085 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:26:28,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:26:28,085 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:26:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:26:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -470709362, now seen corresponding path program 1 times [2020-10-12 13:26:28,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:26:28,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070731056] [2020-10-12 13:26:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:26:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 13:26:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0