/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:46,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:46,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:46,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:46,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:46,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:46,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:46,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:46,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:46,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:46,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:46,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:46,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:46,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:46,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:46,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:46,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:46,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:46,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:46,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:46,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:46,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:46,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:46,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:46,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:46,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:46,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:46,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:46,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:46,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:46,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:46,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:46,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:46,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:46,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:46,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:46,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:46,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:46,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:46,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:46,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:46,474 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 [2020-09-25 04:29:46,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:46,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:46,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:46,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:46,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:46,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:46,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:46,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:46,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:46,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:46,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:46,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:46,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:46,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:46,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:46,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:46,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:46,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:46,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:46,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:46,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:46,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:46,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:46,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:46,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:46,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:46,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:46,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:46,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:46,534 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:46,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:46,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:46,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:46,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:46,980 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:46,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 04:29:47,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730ac7080/06282047582f41dc8f3dd1b617dce520/FLAG945168d78 [2020-09-25 04:29:47,716 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:47,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 04:29:47,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730ac7080/06282047582f41dc8f3dd1b617dce520/FLAG945168d78 [2020-09-25 04:29:47,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730ac7080/06282047582f41dc8f3dd1b617dce520 [2020-09-25 04:29:47,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:47,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:47,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:47,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:47,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:47,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47, skipping insertion in model container [2020-09-25 04:29:47,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:48,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:48,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:48,515 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:48,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:48,817 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:48,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48 WrapperNode [2020-09-25 04:29:48,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:48,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:48,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:48,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:48,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (1/1) ... [2020-09-25 04:29:48,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:48,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:48,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:48,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:48,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (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 [2020-09-25 04:29:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:50,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:50,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:50,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:50 BoogieIcfgContainer [2020-09-25 04:29:50,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:50,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:50,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:50,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:50,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:47" (1/3) ... [2020-09-25 04:29:50,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:50, skipping insertion in model container [2020-09-25 04:29:50,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:48" (2/3) ... [2020-09-25 04:29:50,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:50, skipping insertion in model container [2020-09-25 04:29:50,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:50" (3/3) ... [2020-09-25 04:29:50,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-25 04:29:50,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:50,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:50,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:50,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:50,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:50,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:50,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:50,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:50,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:50,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:50,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 04:29:50,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:50,923 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] [2020-09-25 04:29:50,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-25 04:29:50,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:50,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 04:29:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:51,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:29:51,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 04:29:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:51,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:29:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:29:51,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:51,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:51,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:51,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 04:29:51,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:51,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:51,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411135185] [2020-09-25 04:29:51,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:51,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:51,755 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:29:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:53,929 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:29:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:53,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 04:29:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:53,954 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:29:53,955 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:29:53,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:29:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:29:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:29:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:29:54,061 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 29 [2020-09-25 04:29:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:54,061 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:29:54,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:29:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 04:29:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:54,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:54,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:54,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash -908534672, now seen corresponding path program 1 times [2020-09-25 04:29:54,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:54,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181813175] [2020-09-25 04:29:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 04:29:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-09-25 04:29:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:29:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:29:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:29:57,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:29:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:29:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:57,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181813175] [2020-09-25 04:29:57,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:57,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876854844] [2020-09-25 04:29:57,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:57,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:57,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:57,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:57,396 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:29:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:58,980 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 04:29:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:58,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 04:29:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:58,987 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 04:29:58,987 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 04:29:58,990 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 [2020-09-25 04:29:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 04:29:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 04:29:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 04:29:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 04:29:59,025 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 108 [2020-09-25 04:29:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:59,026 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 04:29:59,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 04:29:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 04:29:59,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:59,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:59,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:59,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash -162546798, now seen corresponding path program 1 times [2020-09-25 04:29:59,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:59,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388968965] [2020-09-25 04:29:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:01,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 04:30:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-09-25 04:30:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:01,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:30:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:01,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:01,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:02,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:30:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:02,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388968965] [2020-09-25 04:30:02,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:02,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:02,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313109312] [2020-09-25 04:30:02,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:02,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:02,055 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 04:30:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:03,964 INFO L93 Difference]: Finished difference Result 1549 states and 1979 transitions. [2020-09-25 04:30:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:03,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-09-25 04:30:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:03,980 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 04:30:03,981 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 04:30:03,984 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 [2020-09-25 04:30:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 04:30:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 999. [2020-09-25 04:30:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 04:30:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1219 transitions. [2020-09-25 04:30:04,036 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1219 transitions. Word has length 118 [2020-09-25 04:30:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:04,037 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1219 transitions. [2020-09-25 04:30:04,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1219 transitions. [2020-09-25 04:30:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 04:30:04,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:04,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:04,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:04,057 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:04,057 INFO L82 PathProgramCache]: Analyzing trace with hash -878375990, now seen corresponding path program 1 times [2020-09-25 04:30:04,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:04,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684929364] [2020-09-25 04:30:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:30:05,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-09-25 04:30:05,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:30:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:30:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:05,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:30:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:05,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684929364] [2020-09-25 04:30:05,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:05,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:05,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200165454] [2020-09-25 04:30:05,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:05,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:05,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:05,601 INFO L87 Difference]: Start difference. First operand 999 states and 1219 transitions. Second operand 5 states. [2020-09-25 04:30:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:06,997 INFO L93 Difference]: Finished difference Result 2157 states and 2726 transitions. [2020-09-25 04:30:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:06,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-09-25 04:30:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:07,007 INFO L225 Difference]: With dead ends: 2157 [2020-09-25 04:30:07,007 INFO L226 Difference]: Without dead ends: 1323 [2020-09-25 04:30:07,010 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 [2020-09-25 04:30:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-09-25 04:30:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1303. [2020-09-25 04:30:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 04:30:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1548 transitions. [2020-09-25 04:30:07,061 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1548 transitions. Word has length 120 [2020-09-25 04:30:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:07,062 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1548 transitions. [2020-09-25 04:30:07,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1548 transitions. [2020-09-25 04:30:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 04:30:07,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:07,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:07,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:07,068 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1668861196, now seen corresponding path program 1 times [2020-09-25 04:30:07,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:07,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538374714] [2020-09-25 04:30:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:30:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-09-25 04:30:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:12,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:30:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:12,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:12,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:12,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:12,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:12,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:30:12,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:12,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:30:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:12,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538374714] [2020-09-25 04:30:12,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:12,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:12,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586918803] [2020-09-25 04:30:12,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:12,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:12,633 INFO L87 Difference]: Start difference. First operand 1303 states and 1548 transitions. Second operand 7 states. [2020-09-25 04:30:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:14,910 INFO L93 Difference]: Finished difference Result 2941 states and 3611 transitions. [2020-09-25 04:30:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:14,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 04:30:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:14,925 INFO L225 Difference]: With dead ends: 2941 [2020-09-25 04:30:14,925 INFO L226 Difference]: Without dead ends: 1311 [2020-09-25 04:30:14,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-25 04:30:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1281. [2020-09-25 04:30:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-09-25 04:30:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1495 transitions. [2020-09-25 04:30:14,977 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1495 transitions. Word has length 201 [2020-09-25 04:30:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:14,977 INFO L479 AbstractCegarLoop]: Abstraction has 1281 states and 1495 transitions. [2020-09-25 04:30:14,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1495 transitions. [2020-09-25 04:30:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 04:30:14,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:14,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:14,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:14,982 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:14,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2109947281, now seen corresponding path program 1 times [2020-09-25 04:30:14,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:14,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182277258] [2020-09-25 04:30:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 04:30:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4635 [2020-09-25 04:30:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:30:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:19,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:30:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 04:30:20,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:20,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:30:20,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:20,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182277258] [2020-09-25 04:30:20,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:20,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:20,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65093935] [2020-09-25 04:30:20,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:20,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:20,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:20,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:20,311 INFO L87 Difference]: Start difference. First operand 1281 states and 1495 transitions. Second operand 7 states. [2020-09-25 04:30:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:22,468 INFO L93 Difference]: Finished difference Result 2743 states and 3317 transitions. [2020-09-25 04:30:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:22,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 04:30:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:22,478 INFO L225 Difference]: With dead ends: 2743 [2020-09-25 04:30:22,478 INFO L226 Difference]: Without dead ends: 1627 [2020-09-25 04:30:22,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-09-25 04:30:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1453. [2020-09-25 04:30:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-09-25 04:30:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1688 transitions. [2020-09-25 04:30:22,532 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1688 transitions. Word has length 216 [2020-09-25 04:30:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:22,532 INFO L479 AbstractCegarLoop]: Abstraction has 1453 states and 1688 transitions. [2020-09-25 04:30:22,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1688 transitions. [2020-09-25 04:30:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-25 04:30:22,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:22,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:22,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:22,541 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:22,542 INFO L82 PathProgramCache]: Analyzing trace with hash 648788089, now seen corresponding path program 1 times [2020-09-25 04:30:22,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:22,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284135498] [2020-09-25 04:30:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-25 04:30:27,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 04:30:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 04:30:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 04:30:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:27,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 04:30:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:30:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 04:30:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:27,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:27,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:30:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-25 04:30:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:30:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 04:30:28,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:30:28,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 04:30:28,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284135498] [2020-09-25 04:30:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:28,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:28,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75512979] [2020-09-25 04:30:28,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:28,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:28,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:28,360 INFO L87 Difference]: Start difference. First operand 1453 states and 1688 transitions. Second operand 7 states. [2020-09-25 04:30:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:30,684 INFO L93 Difference]: Finished difference Result 3541 states and 4182 transitions. [2020-09-25 04:30:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:30,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-09-25 04:30:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:30,695 INFO L225 Difference]: With dead ends: 3541 [2020-09-25 04:30:30,695 INFO L226 Difference]: Without dead ends: 2253 [2020-09-25 04:30:30,699 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 [2020-09-25 04:30:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-09-25 04:30:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2234. [2020-09-25 04:30:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-25 04:30:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2572 transitions. [2020-09-25 04:30:30,751 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2572 transitions. Word has length 368 [2020-09-25 04:30:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:30,752 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2572 transitions. [2020-09-25 04:30:30,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2572 transitions. [2020-09-25 04:30:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-25 04:30:30,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:30,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:30,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:30:30,763 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash 400941441, now seen corresponding path program 1 times [2020-09-25 04:30:30,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:30,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495837000] [2020-09-25 04:30:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-25 04:30:35,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:30:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:35,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-09-25 04:30:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:30:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:30:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:35,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:36,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 04:30:36,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:30:36,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:36,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:36,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1