/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=0.6 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:51,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:51,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:51,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:51,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:51,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:51,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:51,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:51,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:51,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:51,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:51,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:51,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:51,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:51,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:51,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:51,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:51,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:51,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:51,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:51,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:51,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:51,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:51,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:51,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:51,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:51,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:51,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:51,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:51,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:51,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:51,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:51,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:51,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:51,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:51,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:51,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:51,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:51,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:51,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:51,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:51,829 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 06:48:51,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:51,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:51,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:51,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:51,858 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:51,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:51,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:51,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:51,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:51,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:51,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:51,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:51,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:51,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:51,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:51,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:51,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:51,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:51,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:51,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:51,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:51,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:51,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:51,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:51,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:51,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:51,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:51,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:51,863 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:48:52,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:52,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:52,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:52,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:52,346 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:52,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 06:48:52,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02c3a3170/a526a9acdbb746b69b5e8431ddfc3d8f/FLAGde0d828e2 [2020-09-25 06:48:53,082 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:53,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 06:48:53,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02c3a3170/a526a9acdbb746b69b5e8431ddfc3d8f/FLAGde0d828e2 [2020-09-25 06:48:53,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02c3a3170/a526a9acdbb746b69b5e8431ddfc3d8f [2020-09-25 06:48:53,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:53,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:53,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:53,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:53,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:53,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:53" (1/1) ... [2020-09-25 06:48:53,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f1a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:53, skipping insertion in model container [2020-09-25 06:48:53,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:53" (1/1) ... [2020-09-25 06:48:53,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:53,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:54,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:54,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:54,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:54,291 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:54,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54 WrapperNode [2020-09-25 06:48:54,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:54,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:54,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:54,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:54,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (1/1) ... [2020-09-25 06:48:54,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:54,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:54,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:54,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:54,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (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 06:48:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:56,327 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:56,327 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:56,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:56 BoogieIcfgContainer [2020-09-25 06:48:56,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:56,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:56,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:56,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:56,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:53" (1/3) ... [2020-09-25 06:48:56,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469eb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:56, skipping insertion in model container [2020-09-25 06:48:56,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:54" (2/3) ... [2020-09-25 06:48:56,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469eb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:56, skipping insertion in model container [2020-09-25 06:48:56,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:56" (3/3) ... [2020-09-25 06:48:56,348 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 06:48:56,363 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:56,377 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:56,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:56,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:56,446 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:56,446 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:56,446 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:56,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:56,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:56,447 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:56,447 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 06:48:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:48:56,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:56,503 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] [2020-09-25 06:48:56,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 06:48:56,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:56,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288892222] [2020-09-25 06:48:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:57,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 06:48:57,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-25 06:48:57,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:57,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:48:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:57,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:48:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:57,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:57,494 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 06:48:57,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288892222] [2020-09-25 06:48:57,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:57,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:57,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168941826] [2020-09-25 06:48:57,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:57,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:57,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:57,532 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 06:49:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:00,532 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 06:49:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:49:00,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 06:49:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:00,563 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 06:49:00,564 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 06:49:00,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 06:49:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 06:49:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 06:49:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 06:49:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 06:49:00,694 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-25 06:49:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:00,695 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 06:49:00,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:49:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 06:49:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 06:49:00,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:00,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:00,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:49:00,705 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-25 06:49:00,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:00,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339004636] [2020-09-25 06:49:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 06:49:04,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3424 [2020-09-25 06:49:04,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:04,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:49:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:49:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 06:49:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:49:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:04,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339004636] [2020-09-25 06:49:04,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:04,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:04,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006698183] [2020-09-25 06:49:04,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:04,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:04,593 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-25 06:49:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:07,942 INFO L93 Difference]: Finished difference Result 2009 states and 2514 transitions. [2020-09-25 06:49:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:49:07,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-25 06:49:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:07,953 INFO L225 Difference]: With dead ends: 2009 [2020-09-25 06:49:07,953 INFO L226 Difference]: Without dead ends: 1218 [2020-09-25 06:49:07,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:49:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-25 06:49:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1190. [2020-09-25 06:49:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 06:49:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1444 transitions. [2020-09-25 06:49:08,011 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1444 transitions. Word has length 139 [2020-09-25 06:49:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:08,012 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1444 transitions. [2020-09-25 06:49:08,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1444 transitions. [2020-09-25 06:49:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:49:08,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:08,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:08,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:08,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:08,017 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-09-25 06:49:08,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:08,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193069283] [2020-09-25 06:49:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:10,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:49:10,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:10,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2943 [2020-09-25 06:49:10,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:10,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:49:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:49:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:11,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:49:11,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:11,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:49:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:49:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:11,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:49:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:11,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193069283] [2020-09-25 06:49:11,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:11,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:11,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185930244] [2020-09-25 06:49:11,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:11,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:11,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:11,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:11,324 INFO L87 Difference]: Start difference. First operand 1190 states and 1444 transitions. Second operand 7 states. [2020-09-25 06:49:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:13,785 INFO L93 Difference]: Finished difference Result 3077 states and 3845 transitions. [2020-09-25 06:49:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:13,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-25 06:49:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:13,797 INFO L225 Difference]: With dead ends: 3077 [2020-09-25 06:49:13,797 INFO L226 Difference]: Without dead ends: 1902 [2020-09-25 06:49:13,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-09-25 06:49:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1858. [2020-09-25 06:49:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-09-25 06:49:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2190 transitions. [2020-09-25 06:49:13,864 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2190 transitions. Word has length 142 [2020-09-25 06:49:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:13,865 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2190 transitions. [2020-09-25 06:49:13,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2190 transitions. [2020-09-25 06:49:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 06:49:13,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:13,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 06:49:13,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:13,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1665918402, now seen corresponding path program 1 times [2020-09-25 06:49:13,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:13,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105943220] [2020-09-25 06:49:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 06:49:18,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:49:18,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:49:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:19,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:19,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:19,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:19,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 06:49:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:49:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:49:19,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 06:49:19,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:19,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105943220] [2020-09-25 06:49:19,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:19,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:19,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464580021] [2020-09-25 06:49:19,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:19,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:19,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:19,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:19,714 INFO L87 Difference]: Start difference. First operand 1858 states and 2190 transitions. Second operand 8 states. [2020-09-25 06:49:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:23,567 INFO L93 Difference]: Finished difference Result 4213 states and 5150 transitions. [2020-09-25 06:49:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:23,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 247 [2020-09-25 06:49:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:23,580 INFO L225 Difference]: With dead ends: 4213 [2020-09-25 06:49:23,580 INFO L226 Difference]: Without dead ends: 2559 [2020-09-25 06:49:23,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2020-09-25 06:49:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2521. [2020-09-25 06:49:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2020-09-25 06:49:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 2960 transitions. [2020-09-25 06:49:23,659 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 2960 transitions. Word has length 247 [2020-09-25 06:49:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:23,660 INFO L479 AbstractCegarLoop]: Abstraction has 2521 states and 2960 transitions. [2020-09-25 06:49:23,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 2960 transitions. [2020-09-25 06:49:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 06:49:23,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:23,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:23,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:23,667 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-25 06:49:23,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:23,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320618925] [2020-09-25 06:49:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 06:49:28,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 06:49:28,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 06:49:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:28,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:28,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:28,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:49:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:49:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:49:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:49:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 06:49:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 06:49:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:29,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320618925] [2020-09-25 06:49:29,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:29,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:29,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643995420] [2020-09-25 06:49:29,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:29,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:29,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:29,532 INFO L87 Difference]: Start difference. First operand 2521 states and 2960 transitions. Second operand 8 states. [2020-09-25 06:49:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:33,700 INFO L93 Difference]: Finished difference Result 5869 states and 7061 transitions. [2020-09-25 06:49:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:49:33,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-09-25 06:49:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:33,721 INFO L225 Difference]: With dead ends: 5869 [2020-09-25 06:49:33,722 INFO L226 Difference]: Without dead ends: 3552 [2020-09-25 06:49:33,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:49:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-25 06:49:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3512. [2020-09-25 06:49:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3512 states. [2020-09-25 06:49:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 4062 transitions. [2020-09-25 06:49:33,838 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 4062 transitions. Word has length 302 [2020-09-25 06:49:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:33,839 INFO L479 AbstractCegarLoop]: Abstraction has 3512 states and 4062 transitions. [2020-09-25 06:49:33,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 4062 transitions. [2020-09-25 06:49:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-09-25 06:49:33,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:33,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 06:49:33,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:33,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:33,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1465820701, now seen corresponding path program 1 times [2020-09-25 06:49:33,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:33,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622274708] [2020-09-25 06:49:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 06:49:38,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:49:38,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:38,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 06:49:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 06:49:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:39,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:39,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:49:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 06:49:39,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 06:49:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:49:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-25 06:49:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:39,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:49:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 06:49:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 229 proven. 71 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 06:49:39,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622274708] [2020-09-25 06:49:39,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:39,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:39,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495738044] [2020-09-25 06:49:39,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:39,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:39,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:39,552 INFO L87 Difference]: Start difference. First operand 3512 states and 4062 transitions. Second operand 7 states.