/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:14,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:14,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:14,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:14,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:14,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:14,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:14,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:14,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:14,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:14,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:14,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:14,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:14,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:14,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:14,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:14,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:14,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:14,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:14,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:14,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:14,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:14,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:14,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:14,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:14,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:14,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:14,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:14,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:14,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:14,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:14,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:14,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:14,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:14,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:14,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:14,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:14,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:14,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:14,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:14,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:14,912 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 19:29:14,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:14,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:14,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:14,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:14,940 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:14,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:14,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:14,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:14,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:14,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:14,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:14,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:14,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:14,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:14,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:14,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:14,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:14,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:14,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:14,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:14,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:14,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:14,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:14,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:14,945 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 19:29:15,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:15,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:15,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:15,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:15,426 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:15,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 19:29:15,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e1403722/f1933ff54b0241849162cb850a705df7/FLAGca76b56eb [2020-09-24 19:29:16,182 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:16,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 19:29:16,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e1403722/f1933ff54b0241849162cb850a705df7/FLAGca76b56eb [2020-09-24 19:29:16,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e1403722/f1933ff54b0241849162cb850a705df7 [2020-09-24 19:29:16,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:16,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:16,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:16,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:16,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:16,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:16" (1/1) ... [2020-09-24 19:29:16,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f159ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:16, skipping insertion in model container [2020-09-24 19:29:16,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:16" (1/1) ... [2020-09-24 19:29:16,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:16,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:17,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:17,172 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:17,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:17,344 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:17,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17 WrapperNode [2020-09-24 19:29:17,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:17,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:17,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:17,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:17,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (1/1) ... [2020-09-24 19:29:17,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:17,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:17,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:17,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:17,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (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 19:29:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:29:19,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:29:19,183 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:29:19,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:19 BoogieIcfgContainer [2020-09-24 19:29:19,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:29:19,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:29:19,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:29:19,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:29:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:16" (1/3) ... [2020-09-24 19:29:19,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b86982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:19, skipping insertion in model container [2020-09-24 19:29:19,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:17" (2/3) ... [2020-09-24 19:29:19,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b86982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:19, skipping insertion in model container [2020-09-24 19:29:19,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:19" (3/3) ... [2020-09-24 19:29:19,203 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-24 19:29:19,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:29:19,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:29:19,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:29:19,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:29:19,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:29:19,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:29:19,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:29:19,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:29:19,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:29:19,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:29:19,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:29:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:29:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:29:19,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:19,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:19,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:19,338 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-24 19:29:19,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:19,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321121473] [2020-09-24 19:29:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:20,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:29:20,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:20,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-09-24 19:29:20,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:29:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:29:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:29:20,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:20,591 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 19:29:20,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321121473] [2020-09-24 19:29:20,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:20,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:29:20,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729118238] [2020-09-24 19:29:20,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:29:20,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:29:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:29:20,629 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:29:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:22,752 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 19:29:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:29:22,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-24 19:29:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:22,780 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 19:29:22,780 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 19:29:22,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 19:29:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 19:29:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 19:29:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 19:29:22,971 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-24 19:29:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:22,972 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 19:29:22,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:29:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 19:29:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 19:29:22,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:22,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:22,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:22,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-24 19:29:22,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:22,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791574686] [2020-09-24 19:29:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:29:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:29:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 19:29:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 19:29:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:24,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:29:24,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:29:24,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 19:29:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:29:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:24,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791574686] [2020-09-24 19:29:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:24,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:24,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129527081] [2020-09-24 19:29:24,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:24,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:24,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:24,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:24,382 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 19:29:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:26,380 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-24 19:29:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:26,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-24 19:29:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:26,386 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 19:29:26,387 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 19:29:26,390 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 19:29:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 19:29:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-24 19:29:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 19:29:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-24 19:29:26,419 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 136 [2020-09-24 19:29:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:26,420 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-24 19:29:26,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-24 19:29:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 19:29:26,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:26,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:26,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:26,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-24 19:29:26,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:26,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718400181] [2020-09-24 19:29:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:27,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 19:29:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:29:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 19:29:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:27,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:27,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 19:29:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:27,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718400181] [2020-09-24 19:29:27,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:27,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:27,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198280475] [2020-09-24 19:29:27,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:27,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:27,766 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 5 states. [2020-09-24 19:29:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:29,701 INFO L93 Difference]: Finished difference Result 1541 states and 1945 transitions. [2020-09-24 19:29:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:29,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 19:29:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:29,707 INFO L225 Difference]: With dead ends: 1541 [2020-09-24 19:29:29,707 INFO L226 Difference]: Without dead ends: 673 [2020-09-24 19:29:29,710 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 19:29:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-09-24 19:29:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 663. [2020-09-24 19:29:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-09-24 19:29:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 803 transitions. [2020-09-24 19:29:29,734 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 803 transitions. Word has length 145 [2020-09-24 19:29:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:29,735 INFO L479 AbstractCegarLoop]: Abstraction has 663 states and 803 transitions. [2020-09-24 19:29:29,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 803 transitions. [2020-09-24 19:29:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 19:29:29,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:29,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:29,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:29,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1174508811, now seen corresponding path program 1 times [2020-09-24 19:29:29,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:29,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222302211] [2020-09-24 19:29:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 19:29:30,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:29:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:29:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 19:29:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:30,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:29:30,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:30,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:29:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:31,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:31,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 19:29:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:31,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222302211] [2020-09-24 19:29:31,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:31,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:29:31,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274339131] [2020-09-24 19:29:31,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:31,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:31,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:31,204 INFO L87 Difference]: Start difference. First operand 663 states and 803 transitions. Second operand 7 states. [2020-09-24 19:29:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:33,136 INFO L93 Difference]: Finished difference Result 1817 states and 2278 transitions. [2020-09-24 19:29:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:33,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-24 19:29:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:33,147 INFO L225 Difference]: With dead ends: 1817 [2020-09-24 19:29:33,147 INFO L226 Difference]: Without dead ends: 1169 [2020-09-24 19:29:33,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 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 19:29:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-09-24 19:29:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1127. [2020-09-24 19:29:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-09-24 19:29:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1320 transitions. [2020-09-24 19:29:33,203 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1320 transitions. Word has length 148 [2020-09-24 19:29:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:33,203 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1320 transitions. [2020-09-24 19:29:33,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1320 transitions. [2020-09-24 19:29:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 19:29:33,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:33,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:29:33,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:33,211 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1867328357, now seen corresponding path program 1 times [2020-09-24 19:29:33,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:33,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199770214] [2020-09-24 19:29:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-24 19:29:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-24 19:29:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:34,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:34,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:29:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:34,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 19:29:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:34,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199770214] [2020-09-24 19:29:34,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:34,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:34,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728881663] [2020-09-24 19:29:34,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:34,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:34,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:34,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:34,971 INFO L87 Difference]: Start difference. First operand 1127 states and 1320 transitions. Second operand 7 states. [2020-09-24 19:29:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:37,175 INFO L93 Difference]: Finished difference Result 2588 states and 3127 transitions. [2020-09-24 19:29:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:37,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-24 19:29:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:37,185 INFO L225 Difference]: With dead ends: 2588 [2020-09-24 19:29:37,186 INFO L226 Difference]: Without dead ends: 1476 [2020-09-24 19:29:37,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 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 19:29:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-24 19:29:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1300. [2020-09-24 19:29:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2020-09-24 19:29:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1511 transitions. [2020-09-24 19:29:37,250 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1511 transitions. Word has length 227 [2020-09-24 19:29:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:37,250 INFO L479 AbstractCegarLoop]: Abstraction has 1300 states and 1511 transitions. [2020-09-24 19:29:37,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1511 transitions. [2020-09-24 19:29:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-24 19:29:37,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:37,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:37,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:37,256 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1028269574, now seen corresponding path program 1 times [2020-09-24 19:29:37,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:37,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706677844] [2020-09-24 19:29:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 19:29:38,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:38,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:29:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:29:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:38,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:29:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 19:29:38,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:39,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706677844] [2020-09-24 19:29:39,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:39,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:39,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482893709] [2020-09-24 19:29:39,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:39,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:39,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:39,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:39,020 INFO L87 Difference]: Start difference. First operand 1300 states and 1511 transitions. Second operand 7 states. [2020-09-24 19:29:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:41,619 INFO L93 Difference]: Finished difference Result 3455 states and 4043 transitions. [2020-09-24 19:29:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:41,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-09-24 19:29:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:41,635 INFO L225 Difference]: With dead ends: 3455 [2020-09-24 19:29:41,635 INFO L226 Difference]: Without dead ends: 2170 [2020-09-24 19:29:41,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2020-09-24 19:29:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2113. [2020-09-24 19:29:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-24 19:29:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2456 transitions. [2020-09-24 19:29:41,713 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2456 transitions. Word has length 234 [2020-09-24 19:29:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:41,714 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2456 transitions. [2020-09-24 19:29:41,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2456 transitions. [2020-09-24 19:29:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-24 19:29:41,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:41,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:29:41,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:41,722 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash -957541320, now seen corresponding path program 1 times [2020-09-24 19:29:41,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:41,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630659406] [2020-09-24 19:29:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-24 19:29:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:29:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-24 19:29:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:29:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:29:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:29:42,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:42,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:29:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:43,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 19:29:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:29:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:29:43,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630659406] [2020-09-24 19:29:43,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:43,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:43,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853594165] [2020-09-24 19:29:43,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:43,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:43,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:43,188 INFO L87 Difference]: Start difference. First operand 2113 states and 2456 transitions. Second operand 5 states. [2020-09-24 19:29:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:44,936 INFO L93 Difference]: Finished difference Result 4243 states and 4943 transitions. [2020-09-24 19:29:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:44,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-09-24 19:29:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:44,947 INFO L225 Difference]: With dead ends: 4243 [2020-09-24 19:29:44,947 INFO L226 Difference]: Without dead ends: 2145 [2020-09-24 19:29:44,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 19:29:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-09-24 19:29:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2113. [2020-09-24 19:29:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-24 19:29:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2416 transitions. [2020-09-24 19:29:45,008 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2416 transitions. Word has length 253 [2020-09-24 19:29:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:45,008 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2416 transitions. [2020-09-24 19:29:45,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2416 transitions. [2020-09-24 19:29:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-09-24 19:29:45,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:45,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:45,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:45,020 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -544017412, now seen corresponding path program 1 times [2020-09-24 19:29:45,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:45,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994078231] [2020-09-24 19:29:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-09-24 19:29:46,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:29:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-24 19:29:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:29:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:46,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:46,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:29:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:29:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-24 19:29:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:29:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:29:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 205 proven. 71 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-24 19:29:46,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994078231] [2020-09-24 19:29:46,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:46,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:46,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857884426] [2020-09-24 19:29:46,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:46,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:46,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:46,816 INFO L87 Difference]: Start difference. First operand 2113 states and 2416 transitions. Second operand 7 states. [2020-09-24 19:29:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:48,916 INFO L93 Difference]: Finished difference Result 5203 states and 5974 transitions. [2020-09-24 19:29:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:48,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-09-24 19:29:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:48,931 INFO L225 Difference]: With dead ends: 5203 [2020-09-24 19:29:48,931 INFO L226 Difference]: Without dead ends: 3105 [2020-09-24 19:29:48,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2020-09-24 19:29:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2750. [2020-09-24 19:29:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-09-24 19:29:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3153 transitions. [2020-09-24 19:29:49,031 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3153 transitions. Word has length 377 [2020-09-24 19:29:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:49,032 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3153 transitions. [2020-09-24 19:29:49,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3153 transitions. [2020-09-24 19:29:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-09-24 19:29:49,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:49,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:29:49,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:49,060 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash -688080340, now seen corresponding path program 1 times [2020-09-24 19:29:49,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:49,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492442652] [2020-09-24 19:29:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-09-24 19:29:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:29:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:29:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:50,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:50,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:29:50,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:50,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:50,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:29:50,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:50,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:29:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 19:29:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:51,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492442652] [2020-09-24 19:29:51,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:51,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:51,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083328463] [2020-09-24 19:29:51,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:51,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:51,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:51,136 INFO L87 Difference]: Start difference. First operand 2750 states and 3153 transitions. Second operand 7 states. [2020-09-24 19:29:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:53,318 INFO L93 Difference]: Finished difference Result 6144 states and 7149 transitions. [2020-09-24 19:29:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:53,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-09-24 19:29:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:53,332 INFO L225 Difference]: With dead ends: 6144 [2020-09-24 19:29:53,332 INFO L226 Difference]: Without dead ends: 3559 [2020-09-24 19:29:53,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2020-09-24 19:29:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3526. [2020-09-24 19:29:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3526 states. [2020-09-24 19:29:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 4038 transitions. [2020-09-24 19:29:53,431 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 4038 transitions. Word has length 396 [2020-09-24 19:29:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:53,432 INFO L479 AbstractCegarLoop]: Abstraction has 3526 states and 4038 transitions. [2020-09-24 19:29:53,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 4038 transitions. [2020-09-24 19:29:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-24 19:29:53,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:53,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:53,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:53,448 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash 808074244, now seen corresponding path program 1 times [2020-09-24 19:29:53,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:53,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566495005] [2020-09-24 19:29:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:54,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:54,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 19:29:54,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:29:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:29:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:29:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 19:29:55,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-24 19:29:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:55,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 19:29:55,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:29:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 210 proven. 118 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:29:55,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566495005] [2020-09-24 19:29:55,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:55,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:55,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541437220] [2020-09-24 19:29:55,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:55,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:55,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:55,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:55,782 INFO L87 Difference]: Start difference. First operand 3526 states and 4038 transitions. Second operand 7 states. [2020-09-24 19:29:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:58,327 INFO L93 Difference]: Finished difference Result 7610 states and 8985 transitions. [2020-09-24 19:29:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:58,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-09-24 19:29:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:58,349 INFO L225 Difference]: With dead ends: 7610 [2020-09-24 19:29:58,350 INFO L226 Difference]: Without dead ends: 4249 [2020-09-24 19:29:58,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2020-09-24 19:29:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 3988. [2020-09-24 19:29:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3988 states. [2020-09-24 19:29:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 4555 transitions. [2020-09-24 19:29:58,471 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 4555 transitions. Word has length 407 [2020-09-24 19:29:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:58,471 INFO L479 AbstractCegarLoop]: Abstraction has 3988 states and 4555 transitions. [2020-09-24 19:29:58,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 4555 transitions. [2020-09-24 19:29:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-24 19:29:58,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:58,496 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:58,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:58,496 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:58,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1818989713, now seen corresponding path program 1 times [2020-09-24 19:29:58,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:58,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269062733] [2020-09-24 19:29:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 19:29:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:29:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:29:59,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-09-24 19:29:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:59,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:59,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:59,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:29:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:59,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 19:29:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:29:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-09-24 19:29:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:00,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:30:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 19:30:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:30:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-24 19:30:00,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269062733] [2020-09-24 19:30:00,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:00,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:00,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401750707] [2020-09-24 19:30:00,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:00,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:00,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:00,445 INFO L87 Difference]: Start difference. First operand 3988 states and 4555 transitions. Second operand 7 states. [2020-09-24 19:30:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:02,840 INFO L93 Difference]: Finished difference Result 8086 states and 9326 transitions. [2020-09-24 19:30:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:02,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-09-24 19:30:02,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:02,857 INFO L225 Difference]: With dead ends: 8086 [2020-09-24 19:30:02,857 INFO L226 Difference]: Without dead ends: 3465 [2020-09-24 19:30:02,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-09-24 19:30:02,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3184. [2020-09-24 19:30:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-09-24 19:30:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3490 transitions. [2020-09-24 19:30:02,950 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3490 transitions. Word has length 408 [2020-09-24 19:30:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:02,951 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 3490 transitions. [2020-09-24 19:30:02,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3490 transitions. [2020-09-24 19:30:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-24 19:30:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:02,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:30:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:30:02,963 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2024836857, now seen corresponding path program 1 times [2020-09-24 19:30:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:02,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925483285] [2020-09-24 19:30:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-24 19:30:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:30:04,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-09-24 19:30:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:30:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:30:04,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:30:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:30:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:30:04,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:30:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-24 19:30:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:30:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 19:30:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:30:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-24 19:30:04,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925483285] [2020-09-24 19:30:04,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:04,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:04,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010496362] [2020-09-24 19:30:04,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:04,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:04,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:04,765 INFO L87 Difference]: Start difference. First operand 3184 states and 3490 transitions. Second operand 7 states.