/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:09,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:09,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:09,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:09,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:09,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:09,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:09,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:09,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:09,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:09,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:09,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:09,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:09,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:09,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:09,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:09,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:09,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:09,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:09,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:09,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:09,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:09,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:09,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:09,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:09,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:09,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:09,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:09,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:09,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:09,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:09,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:09,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:09,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:09,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:09,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:09,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:09,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:09,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:09,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:09,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:09,938 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 [2020-09-24 19:29:09,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:09,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:09,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:09,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:09,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:09,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:09,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:09,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:09,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:09,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:09,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:09,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:09,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:09,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:09,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:09,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:09,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:09,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:09,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:09,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:09,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:09,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:09,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:09,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:09,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:09,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:09,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:09,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:09,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:09,990 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:10,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:10,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:10,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:10,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:10,486 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:10,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 19:29:10,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae64afb1e/a9e27e48b14b4eef87f32143ee0aeeeb/FLAGa7c70a62a [2020-09-24 19:29:11,179 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:11,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 19:29:11,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae64afb1e/a9e27e48b14b4eef87f32143ee0aeeeb/FLAGa7c70a62a [2020-09-24 19:29:11,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae64afb1e/a9e27e48b14b4eef87f32143ee0aeeeb [2020-09-24 19:29:11,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:11,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:11,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:11,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:11,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:11,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:11" (1/1) ... [2020-09-24 19:29:11,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:11, skipping insertion in model container [2020-09-24 19:29:11,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:11" (1/1) ... [2020-09-24 19:29:11,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:11,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:12,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:12,190 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:12,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:12,371 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:12,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12 WrapperNode [2020-09-24 19:29:12,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:12,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:12,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:12,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:12,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (1/1) ... [2020-09-24 19:29:12,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:12,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:12,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:12,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:12,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (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 [2020-09-24 19:29:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:29:14,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:29:14,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:29:14,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:14 BoogieIcfgContainer [2020-09-24 19:29:14,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:29:14,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:29:14,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:29:14,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:29:14,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:11" (1/3) ... [2020-09-24 19:29:14,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:14, skipping insertion in model container [2020-09-24 19:29:14,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:12" (2/3) ... [2020-09-24 19:29:14,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:14, skipping insertion in model container [2020-09-24 19:29:14,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:14" (3/3) ... [2020-09-24 19:29:14,296 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-24 19:29:14,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:29:14,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:29:14,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:29:14,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:29:14,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:29:14,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:29:14,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:29:14,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:29:14,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:29:14,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:29:14,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:29:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:29:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:29:14,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:14,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:14,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-24 19:29:14,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:14,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-24 19:29:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 19:29:15,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-09-24 19:29:15,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:29:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 19:29:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 33 [2020-09-24 19:29:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:29:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:29:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:15,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-24 19:29:15,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:15,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:29:15,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861780592] [2020-09-24 19:29:15,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:29:15,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:29:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:29:15,863 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:29:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:18,148 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 19:29:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:29:18,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 19:29:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:18,174 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 19:29:18,174 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 19:29:18,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 19:29:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 19:29:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 19:29:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 19:29:18,291 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-24 19:29:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:18,292 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 19:29:18,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:29:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 19:29:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 19:29:18,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:18,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:18,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:18,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:18,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-24 19:29:18,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:18,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236569599] [2020-09-24 19:29:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 19:29:19,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:29:19,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:29:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:19,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:29:19,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:29:19,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:29:19,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:19,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236569599] [2020-09-24 19:29:19,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:19,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:29:19,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278802461] [2020-09-24 19:29:19,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:19,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:19,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:19,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:19,805 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 19:29:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:22,051 INFO L93 Difference]: Finished difference Result 1467 states and 1893 transitions. [2020-09-24 19:29:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:22,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-24 19:29:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:22,059 INFO L225 Difference]: With dead ends: 1467 [2020-09-24 19:29:22,060 INFO L226 Difference]: Without dead ends: 906 [2020-09-24 19:29:22,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-24 19:29:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 888. [2020-09-24 19:29:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-24 19:29:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1125 transitions. [2020-09-24 19:29:22,138 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1125 transitions. Word has length 129 [2020-09-24 19:29:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:22,142 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1125 transitions. [2020-09-24 19:29:22,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1125 transitions. [2020-09-24 19:29:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 19:29:22,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:22,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:22,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:22,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-24 19:29:22,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:22,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061420889] [2020-09-24 19:29:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 19:29:23,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:29:23,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:29:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:23,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:23,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:23,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 19:29:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:23,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061420889] [2020-09-24 19:29:23,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:23,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:23,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470333794] [2020-09-24 19:29:23,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:23,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:23,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:23,517 INFO L87 Difference]: Start difference. First operand 888 states and 1125 transitions. Second operand 5 states. [2020-09-24 19:29:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:25,240 INFO L93 Difference]: Finished difference Result 1206 states and 1609 transitions. [2020-09-24 19:29:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:25,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-24 19:29:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:25,251 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 19:29:25,251 INFO L226 Difference]: Without dead ends: 1204 [2020-09-24 19:29:25,252 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 [2020-09-24 19:29:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-09-24 19:29:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1042. [2020-09-24 19:29:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-24 19:29:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1370 transitions. [2020-09-24 19:29:25,294 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1370 transitions. Word has length 135 [2020-09-24 19:29:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:25,295 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1370 transitions. [2020-09-24 19:29:25,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1370 transitions. [2020-09-24 19:29:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:29:25,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:25,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:25,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:25,300 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-24 19:29:25,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:25,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951106470] [2020-09-24 19:29:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 19:29:26,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:29:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 19:29:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:29:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:29:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 19:29:26,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:29:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:26,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951106470] [2020-09-24 19:29:26,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:26,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:26,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598686569] [2020-09-24 19:29:26,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:26,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:26,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:26,685 INFO L87 Difference]: Start difference. First operand 1042 states and 1370 transitions. Second operand 5 states. [2020-09-24 19:29:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:28,618 INFO L93 Difference]: Finished difference Result 2855 states and 3905 transitions. [2020-09-24 19:29:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:28,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 19:29:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:28,629 INFO L225 Difference]: With dead ends: 2855 [2020-09-24 19:29:28,630 INFO L226 Difference]: Without dead ends: 1828 [2020-09-24 19:29:28,635 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 [2020-09-24 19:29:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-24 19:29:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1197. [2020-09-24 19:29:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-09-24 19:29:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1548 transitions. [2020-09-24 19:29:28,683 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1548 transitions. Word has length 154 [2020-09-24 19:29:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:28,684 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1548 transitions. [2020-09-24 19:29:28,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1548 transitions. [2020-09-24 19:29:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 19:29:28,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:28,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:28,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:28,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 338827408, now seen corresponding path program 1 times [2020-09-24 19:29:28,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:28,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930132751] [2020-09-24 19:29:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 19:29:29,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:29:29,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-09-24 19:29:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:29:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:29,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:30,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:29:30,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 19:29:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:30,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930132751] [2020-09-24 19:29:30,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:30,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:30,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125767118] [2020-09-24 19:29:30,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:30,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:30,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:30,090 INFO L87 Difference]: Start difference. First operand 1197 states and 1548 transitions. Second operand 5 states. [2020-09-24 19:29:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:32,037 INFO L93 Difference]: Finished difference Result 2867 states and 3805 transitions. [2020-09-24 19:29:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:32,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-24 19:29:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:32,056 INFO L225 Difference]: With dead ends: 2867 [2020-09-24 19:29:32,060 INFO L226 Difference]: Without dead ends: 1685 [2020-09-24 19:29:32,064 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 [2020-09-24 19:29:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-24 19:29:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1501. [2020-09-24 19:29:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-09-24 19:29:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1899 transitions. [2020-09-24 19:29:32,116 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1899 transitions. Word has length 175 [2020-09-24 19:29:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:32,117 INFO L479 AbstractCegarLoop]: Abstraction has 1501 states and 1899 transitions. [2020-09-24 19:29:32,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1899 transitions. [2020-09-24 19:29:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-24 19:29:32,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:32,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:32,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:32,126 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash 808739585, now seen corresponding path program 1 times [2020-09-24 19:29:32,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:32,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079072569] [2020-09-24 19:29:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-24 19:29:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:29:33,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 19:29:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:33,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:29:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:29:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 19:29:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:29:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:33,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 19:29:33,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 56 [2020-09-24 19:29:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:33,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079072569] [2020-09-24 19:29:33,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:33,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:33,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287505454] [2020-09-24 19:29:33,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:33,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:33,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:33,780 INFO L87 Difference]: Start difference. First operand 1501 states and 1899 transitions. Second operand 7 states. [2020-09-24 19:29:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:36,200 INFO L93 Difference]: Finished difference Result 3805 states and 5075 transitions. [2020-09-24 19:29:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:36,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-24 19:29:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:36,212 INFO L225 Difference]: With dead ends: 3805 [2020-09-24 19:29:36,212 INFO L226 Difference]: Without dead ends: 2319 [2020-09-24 19:29:36,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-09-24 19:29:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1977. [2020-09-24 19:29:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1977 states. [2020-09-24 19:29:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2495 transitions. [2020-09-24 19:29:36,280 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2495 transitions. Word has length 221 [2020-09-24 19:29:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:36,280 INFO L479 AbstractCegarLoop]: Abstraction has 1977 states and 2495 transitions. [2020-09-24 19:29:36,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2495 transitions. [2020-09-24 19:29:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 19:29:36,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:36,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:36,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:36,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1550966703, now seen corresponding path program 1 times [2020-09-24 19:29:36,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:36,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846774791] [2020-09-24 19:29:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-24 19:29:37,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:37,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:29:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:29:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:29:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:29:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:29:37,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:37,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846774791] [2020-09-24 19:29:37,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:37,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:37,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099620669] [2020-09-24 19:29:37,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:37,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:37,893 INFO L87 Difference]: Start difference. First operand 1977 states and 2495 transitions. Second operand 7 states. [2020-09-24 19:29:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:40,345 INFO L93 Difference]: Finished difference Result 4577 states and 6028 transitions. [2020-09-24 19:29:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:40,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-24 19:29:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:40,364 INFO L225 Difference]: With dead ends: 4577 [2020-09-24 19:29:40,364 INFO L226 Difference]: Without dead ends: 2615 [2020-09-24 19:29:40,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2020-09-24 19:29:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2593. [2020-09-24 19:29:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2020-09-24 19:29:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3298 transitions. [2020-09-24 19:29:40,456 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3298 transitions. Word has length 227 [2020-09-24 19:29:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:40,457 INFO L479 AbstractCegarLoop]: Abstraction has 2593 states and 3298 transitions. [2020-09-24 19:29:40,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3298 transitions. [2020-09-24 19:29:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 19:29:40,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:40,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:40,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:40,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1705738928, now seen corresponding path program 1 times [2020-09-24 19:29:40,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:40,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665021179] [2020-09-24 19:29:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 19:29:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:29:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-24 19:29:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:41,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:29:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:29:41,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 19:29:41,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:29:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-24 19:29:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:42,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665021179] [2020-09-24 19:29:42,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:42,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:42,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114264863] [2020-09-24 19:29:42,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:42,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:42,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:42,049 INFO L87 Difference]: Start difference. First operand 2593 states and 3298 transitions. Second operand 7 states. [2020-09-24 19:29:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:44,590 INFO L93 Difference]: Finished difference Result 6489 states and 8254 transitions. [2020-09-24 19:29:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:44,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-09-24 19:29:44,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:44,615 INFO L225 Difference]: With dead ends: 6489 [2020-09-24 19:29:44,615 INFO L226 Difference]: Without dead ends: 3911 [2020-09-24 19:29:44,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2020-09-24 19:29:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3558. [2020-09-24 19:29:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-09-24 19:29:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4500 transitions. [2020-09-24 19:29:44,739 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4500 transitions. Word has length 243 [2020-09-24 19:29:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:44,740 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4500 transitions. [2020-09-24 19:29:44,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4500 transitions. [2020-09-24 19:29:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 19:29:44,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:44,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:44,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:44,751 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:44,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1493557373, now seen corresponding path program 1 times [2020-09-24 19:29:44,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:44,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168132760] [2020-09-24 19:29:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 19:29:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:29:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:29:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 19:29:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:45,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:45,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:45,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:29:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:29:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:29:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:29:46,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 19:29:46,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:46,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:46,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:29:46,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:46,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168132760] [2020-09-24 19:29:46,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:46,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:46,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916472339] [2020-09-24 19:29:46,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:46,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:46,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:46,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:46,521 INFO L87 Difference]: Start difference. First operand 3558 states and 4500 transitions. Second operand 7 states. [2020-09-24 19:29:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:49,788 INFO L93 Difference]: Finished difference Result 7673 states and 10028 transitions. [2020-09-24 19:29:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:49,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 19:29:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:49,812 INFO L225 Difference]: With dead ends: 7673 [2020-09-24 19:29:49,812 INFO L226 Difference]: Without dead ends: 4280 [2020-09-24 19:29:49,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-09-24 19:29:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4096. [2020-09-24 19:29:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4096 states. [2020-09-24 19:29:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 5141 transitions. [2020-09-24 19:29:49,971 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 5141 transitions. Word has length 267 [2020-09-24 19:29:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:49,971 INFO L479 AbstractCegarLoop]: Abstraction has 4096 states and 5141 transitions. [2020-09-24 19:29:49,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 5141 transitions. [2020-09-24 19:29:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 19:29:49,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:49,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:49,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:49,988 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1670509076, now seen corresponding path program 1 times [2020-09-24 19:29:49,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:49,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93140946] [2020-09-24 19:29:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-24 19:29:51,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:51,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:29:51,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:51,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:51,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:29:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 19:29:51,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 50 [2020-09-24 19:29:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:51,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93140946] [2020-09-24 19:29:51,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:51,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396785754] [2020-09-24 19:29:51,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:51,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:51,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:51,873 INFO L87 Difference]: Start difference. First operand 4096 states and 5141 transitions. Second operand 7 states. [2020-09-24 19:29:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:54,403 INFO L93 Difference]: Finished difference Result 9065 states and 11804 transitions. [2020-09-24 19:29:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:54,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-09-24 19:29:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:54,428 INFO L225 Difference]: With dead ends: 9065 [2020-09-24 19:29:54,428 INFO L226 Difference]: Without dead ends: 4270 [2020-09-24 19:29:54,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2020-09-24 19:29:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3872. [2020-09-24 19:29:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3872 states. [2020-09-24 19:29:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 4710 transitions. [2020-09-24 19:29:54,575 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 4710 transitions. Word has length 271 [2020-09-24 19:29:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:54,576 INFO L479 AbstractCegarLoop]: Abstraction has 3872 states and 4710 transitions. [2020-09-24 19:29:54,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 4710 transitions. [2020-09-24 19:29:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-09-24 19:29:54,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:54,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:54,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:54,597 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:54,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:54,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1234039332, now seen corresponding path program 1 times [2020-09-24 19:29:54,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:54,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496854895] [2020-09-24 19:29:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-09-24 19:29:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 19:29:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:29:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:29:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:55,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 19:29:56,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 19:29:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:56,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496854895] [2020-09-24 19:29:56,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:56,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:56,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808433593] [2020-09-24 19:29:56,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:56,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:56,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:56,640 INFO L87 Difference]: Start difference. First operand 3872 states and 4710 transitions. Second operand 7 states. [2020-09-24 19:29:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:59,037 INFO L93 Difference]: Finished difference Result 8419 states and 10352 transitions. [2020-09-24 19:29:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:59,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-09-24 19:29:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:59,062 INFO L225 Difference]: With dead ends: 8419 [2020-09-24 19:29:59,062 INFO L226 Difference]: Without dead ends: 4712 [2020-09-24 19:29:59,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2020-09-24 19:29:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4007. [2020-09-24 19:29:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4007 states. [2020-09-24 19:29:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 4814 transitions. [2020-09-24 19:29:59,176 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 4814 transitions. Word has length 386 [2020-09-24 19:29:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:59,177 INFO L479 AbstractCegarLoop]: Abstraction has 4007 states and 4814 transitions. [2020-09-24 19:29:59,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 4814 transitions. [2020-09-24 19:29:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-09-24 19:29:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:59,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:59,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:29:59,200 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:59,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2044542159, now seen corresponding path program 1 times [2020-09-24 19:29:59,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:59,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490156706] [2020-09-24 19:29:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-24 19:30:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-09-24 19:30:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 375 [2020-09-24 19:30:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:30:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:00,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:00,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:30:00,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat