/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=0.8 --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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:26,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:26,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:26,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:26,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:26,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:26,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:26,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:26,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:26,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:26,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:26,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:26,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:26,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:26,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:26,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:26,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:26,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:26,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:26,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:26,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:26,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:26,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:26,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:26,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:26,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:26,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:26,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:26,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:26,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:26,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:26,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:26,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:26,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:26,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:26,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:26,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:26,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:26,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:26,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:26,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:26,723 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 07:51:26,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:26,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:26,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:26,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:26,782 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:26,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:26,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:26,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:26,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:26,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:26,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:26,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:26,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:26,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:26,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:26,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:26,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:26,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:26,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:26,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:26,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:26,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:26,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:26,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:26,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:26,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:26,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:26,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:26,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:26,787 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:51:27,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:27,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:27,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:27,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:27,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:27,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 07:51:27,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928e34700/75c7ba8697bb4173889e15459f214081/FLAG987ad1d45 [2020-09-25 07:51:28,066 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:28,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 07:51:28,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928e34700/75c7ba8697bb4173889e15459f214081/FLAG987ad1d45 [2020-09-25 07:51:28,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928e34700/75c7ba8697bb4173889e15459f214081 [2020-09-25 07:51:28,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:28,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:28,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:28,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:28,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:28,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66df4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28, skipping insertion in model container [2020-09-25 07:51:28,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:28,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:29,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:29,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:29,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:29,226 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:29,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29 WrapperNode [2020-09-25 07:51:29,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:29,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:29,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:29,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:29,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (1/1) ... [2020-09-25 07:51:29,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:29,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:29,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:29,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:29,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (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 07:51:29,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:29,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:30,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:30,831 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:30,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:30 BoogieIcfgContainer [2020-09-25 07:51:30,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:30,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:30,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:30,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:30,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:28" (1/3) ... [2020-09-25 07:51:30,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422fd76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:30, skipping insertion in model container [2020-09-25 07:51:30,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:29" (2/3) ... [2020-09-25 07:51:30,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422fd76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:30, skipping insertion in model container [2020-09-25 07:51:30,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:30" (3/3) ... [2020-09-25 07:51:30,852 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 07:51:30,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:30,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:30,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:30,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:30,954 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:30,954 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:30,954 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:30,954 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:30,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:30,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:30,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 07:51:31,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:31,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:31,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 07:51:31,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:31,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992873904] [2020-09-25 07:51:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:51:36,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:51:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 07:51:36,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:36,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 07:51:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:51:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:36,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:36,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:51:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:36,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:36,707 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 07:51:36,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992873904] [2020-09-25 07:51:36,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:36,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:36,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697954925] [2020-09-25 07:51:36,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:36,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:36,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:36,743 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:39,073 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 07:51:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:39,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 07:51:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:39,122 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 07:51:39,123 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 07:51:39,137 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 [2020-09-25 07:51:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 07:51:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 07:51:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 07:51:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 07:51:39,252 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 07:51:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:39,253 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 07:51:39,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 07:51:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:51:39,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:39,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:39,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:39,270 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 07:51:39,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:39,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061783398] [2020-09-25 07:51:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:51:44,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:51:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:51:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:44,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:51:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 07:51:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:44,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:44,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:44,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:51:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:44,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:51:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:44,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:51:44,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:44,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:51:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:44,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061783398] [2020-09-25 07:51:44,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:44,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:44,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590037137] [2020-09-25 07:51:44,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:44,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:44,615 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 07:51:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:46,724 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 07:51:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:46,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 07:51:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:46,738 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 07:51:46,738 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 07:51:46,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 07:51:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 07:51:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 07:51:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 07:51:46,783 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 07:51:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:46,784 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 07:51:46,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 07:51:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:51:46,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:46,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:46,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:46,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:46,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 07:51:46,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:46,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926415788] [2020-09-25 07:51:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:51,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 07:51:51,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:51:51,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:51,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:51:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:51:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:51,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:51,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:51,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:51:51,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:51,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:52,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 07:51:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:52,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:52,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926415788] [2020-09-25 07:51:52,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:52,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:52,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243417657] [2020-09-25 07:51:52,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:52,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:52,102 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 7 states. [2020-09-25 07:51:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:54,681 INFO L93 Difference]: Finished difference Result 2614 states and 3345 transitions. [2020-09-25 07:51:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:54,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 07:51:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:54,699 INFO L225 Difference]: With dead ends: 2614 [2020-09-25 07:51:54,700 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 07:51:54,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 07:51:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1617. [2020-09-25 07:51:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-09-25 07:51:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1991 transitions. [2020-09-25 07:51:54,768 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1991 transitions. Word has length 175 [2020-09-25 07:51:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:54,769 INFO L479 AbstractCegarLoop]: Abstraction has 1617 states and 1991 transitions. [2020-09-25 07:51:54,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1991 transitions. [2020-09-25 07:51:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 07:51:54,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:54,777 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:54,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:54,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash -699904969, now seen corresponding path program 1 times [2020-09-25 07:51:54,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:54,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858426134] [2020-09-25 07:51:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 07:51:59,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 07:51:59,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:59,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:51:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:59,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:59,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:51:59,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:59,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:00,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:00,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:52:00,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:00,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:00,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:00,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:00,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:52:00,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:00,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:52:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:00,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858426134] [2020-09-25 07:52:00,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:00,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:00,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749178769] [2020-09-25 07:52:00,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:00,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:00,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:00,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:00,241 INFO L87 Difference]: Start difference. First operand 1617 states and 1991 transitions. Second operand 7 states. [2020-09-25 07:52:02,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:02,524 INFO L93 Difference]: Finished difference Result 3828 states and 4892 transitions. [2020-09-25 07:52:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:02,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 07:52:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:02,545 INFO L225 Difference]: With dead ends: 3828 [2020-09-25 07:52:02,546 INFO L226 Difference]: Without dead ends: 2235 [2020-09-25 07:52:02,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-09-25 07:52:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2137. [2020-09-25 07:52:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-09-25 07:52:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2596 transitions. [2020-09-25 07:52:02,656 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2596 transitions. Word has length 185 [2020-09-25 07:52:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:02,656 INFO L479 AbstractCegarLoop]: Abstraction has 2137 states and 2596 transitions. [2020-09-25 07:52:02,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2596 transitions. [2020-09-25 07:52:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:52:02,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:02,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:02,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:02,669 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:02,669 INFO L82 PathProgramCache]: Analyzing trace with hash -568607469, now seen corresponding path program 1 times [2020-09-25 07:52:02,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:02,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416656740] [2020-09-25 07:52:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:04,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:07,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:52:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:52:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:07,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:52:07,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:07,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:52:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:07,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:52:07,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:07,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 07:52:07,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:07,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:07,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:52:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 07:52:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:52:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 07:52:08,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416656740] [2020-09-25 07:52:08,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:08,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:08,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492238656] [2020-09-25 07:52:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:08,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:08,108 INFO L87 Difference]: Start difference. First operand 2137 states and 2596 transitions. Second operand 7 states. [2020-09-25 07:52:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:11,122 INFO L93 Difference]: Finished difference Result 5976 states and 7606 transitions. [2020-09-25 07:52:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:52:11,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 07:52:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:11,150 INFO L225 Difference]: With dead ends: 5976 [2020-09-25 07:52:11,150 INFO L226 Difference]: Without dead ends: 3863 [2020-09-25 07:52:11,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-09-25 07:52:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3200. [2020-09-25 07:52:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-09-25 07:52:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 3958 transitions. [2020-09-25 07:52:11,288 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 3958 transitions. Word has length 192 [2020-09-25 07:52:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:11,289 INFO L479 AbstractCegarLoop]: Abstraction has 3200 states and 3958 transitions. [2020-09-25 07:52:11,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 3958 transitions. [2020-09-25 07:52:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:52:11,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:11,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:11,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:11,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:11,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:11,310 INFO L82 PathProgramCache]: Analyzing trace with hash 583693752, now seen corresponding path program 1 times [2020-09-25 07:52:11,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:11,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134295842] [2020-09-25 07:52:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking...