/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=0.4 --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 05:33:41,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:41,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:41,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:41,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:41,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:41,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:41,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:41,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:41,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:41,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:41,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:41,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:41,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:41,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:41,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:41,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:41,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:41,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:41,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:41,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:41,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:41,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:41,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:41,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:41,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:41,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:41,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:41,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:41,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:41,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:41,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:41,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:41,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:41,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:41,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:41,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:41,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:41,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:41,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:41,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:41,812 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 05:33:41,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:41,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:41,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:41,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:41,861 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:41,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:41,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:41,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:41,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:41,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:41,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:41,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:41,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:41,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:41,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:41,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:41,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:41,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:41,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:41,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:41,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:41,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:41,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:41,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:41,866 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:33:42,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:42,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:42,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:42,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:42,409 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:42,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 05:33:42,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d9d467f/bec12125ae394eea8d3de2aa1e3c7b4d/FLAG1df7fb684 [2020-09-25 05:33:43,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:43,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 05:33:43,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d9d467f/bec12125ae394eea8d3de2aa1e3c7b4d/FLAG1df7fb684 [2020-09-25 05:33:43,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d9d467f/bec12125ae394eea8d3de2aa1e3c7b4d [2020-09-25 05:33:43,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:43,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:43,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:43,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:43,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:43,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:43" (1/1) ... [2020-09-25 05:33:43,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:43, skipping insertion in model container [2020-09-25 05:33:43,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:43" (1/1) ... [2020-09-25 05:33:43,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:43,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:44,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:44,170 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:44,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:44,324 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:44,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44 WrapperNode [2020-09-25 05:33:44,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:44,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:44,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:44,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:44,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (1/1) ... [2020-09-25 05:33:44,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:44,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:44,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:44,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:44,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (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 05:33:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:45,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:45,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:45,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:45 BoogieIcfgContainer [2020-09-25 05:33:45,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:45,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:45,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:45,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:45,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:43" (1/3) ... [2020-09-25 05:33:45,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:45, skipping insertion in model container [2020-09-25 05:33:45,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:44" (2/3) ... [2020-09-25 05:33:45,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:45, skipping insertion in model container [2020-09-25 05:33:45,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:45" (3/3) ... [2020-09-25 05:33:45,884 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 05:33:45,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:45,911 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:45,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:45,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:45,967 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:45,968 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:45,968 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:45,968 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:45,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:45,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:45,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 05:33:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:46,032 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 05:33:46,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 05:33:46,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:46,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 05:33:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:33:51,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:33:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 05:33:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:33:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,716 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 05:33:51,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 05:33:51,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:51,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427244001] [2020-09-25 05:33:51,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:51,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:51,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:51,751 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:53,965 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 05:33:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:53,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 05:33:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:53,995 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 05:33:53,996 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 05:33:54,007 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 05:33:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 05:33:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 05:33:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:54,119 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 05:33:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:54,120 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:54,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:33:54,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:54,130 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 05:33:54,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:54,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:54,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 05:33:54,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:54,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160378997] [2020-09-25 05:33:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:33:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:33:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 05:33:59,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 05:33:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:33:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:33:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,471 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 05:33:59,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160378997] [2020-09-25 05:33:59,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:59,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:59,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233827091] [2020-09-25 05:33:59,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:59,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:59,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:59,475 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 05:34:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:01,545 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 05:34:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:01,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 05:34:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:01,559 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 05:34:01,559 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 05:34:01,563 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 05:34:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 05:34:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 05:34:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 05:34:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 05:34:01,611 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 05:34:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:01,612 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 05:34:01,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 05:34:01,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:34:01,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:01,618 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 05:34:01,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:01,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 05:34:01,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:01,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240534370] [2020-09-25 05:34:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:34:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 05:34:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:34:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:06,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:06,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:06,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:34:06,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 05:34:06,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:07,125 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 05:34:07,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240534370] [2020-09-25 05:34:07,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:07,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:07,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592607345] [2020-09-25 05:34:07,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:07,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:07,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:07,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:07,134 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 7 states. [2020-09-25 05:34:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:09,575 INFO L93 Difference]: Finished difference Result 2534 states and 3210 transitions. [2020-09-25 05:34:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:09,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 05:34:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:09,586 INFO L225 Difference]: With dead ends: 2534 [2020-09-25 05:34:09,586 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 05:34:09,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 05:34:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1540. [2020-09-25 05:34:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 05:34:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1911 transitions. [2020-09-25 05:34:09,661 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1911 transitions. Word has length 175 [2020-09-25 05:34:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:09,662 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1911 transitions. [2020-09-25 05:34:09,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1911 transitions. [2020-09-25 05:34:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 05:34:09,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:09,671 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 05:34:09,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:09,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:09,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:09,672 INFO L82 PathProgramCache]: Analyzing trace with hash -699904969, now seen corresponding path program 1 times [2020-09-25 05:34:09,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:09,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84378092] [2020-09-25 05:34:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 05:34:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:34:14,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:34:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:14,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:14,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:14,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:34:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:34:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:34:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:15,052 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 05:34:15,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84378092] [2020-09-25 05:34:15,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:15,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:15,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429234137] [2020-09-25 05:34:15,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:15,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:15,057 INFO L87 Difference]: Start difference. First operand 1540 states and 1911 transitions. Second operand 7 states. [2020-09-25 05:34:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:17,442 INFO L93 Difference]: Finished difference Result 3631 states and 4687 transitions. [2020-09-25 05:34:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:17,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 05:34:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:17,458 INFO L225 Difference]: With dead ends: 3631 [2020-09-25 05:34:17,458 INFO L226 Difference]: Without dead ends: 2115 [2020-09-25 05:34:17,465 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 05:34:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-09-25 05:34:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2018. [2020-09-25 05:34:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2018 states. [2020-09-25 05:34:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2478 transitions. [2020-09-25 05:34:17,552 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2478 transitions. Word has length 185 [2020-09-25 05:34:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:17,552 INFO L479 AbstractCegarLoop]: Abstraction has 2018 states and 2478 transitions. [2020-09-25 05:34:17,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2478 transitions. [2020-09-25 05:34:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 05:34:17,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:17,562 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 05:34:17,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:17,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:17,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:17,563 INFO L82 PathProgramCache]: Analyzing trace with hash -568607469, now seen corresponding path program 1 times [2020-09-25 05:34:17,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:17,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702246735] [2020-09-25 05:34:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 05:34:22,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 05:34:22,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 05:34:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:34:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:34:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:22,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:22,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:22,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:34:22,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:34:22,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702246735] [2020-09-25 05:34:22,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:22,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:22,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865749795] [2020-09-25 05:34:22,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:22,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:22,892 INFO L87 Difference]: Start difference. First operand 2018 states and 2478 transitions. Second operand 7 states. [2020-09-25 05:34:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:25,228 INFO L93 Difference]: Finished difference Result 5297 states and 6648 transitions. [2020-09-25 05:34:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:25,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 05:34:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:25,249 INFO L225 Difference]: With dead ends: 5297 [2020-09-25 05:34:25,250 INFO L226 Difference]: Without dead ends: 3303 [2020-09-25 05:34:25,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2020-09-25 05:34:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2602. [2020-09-25 05:34:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-09-25 05:34:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3270 transitions. [2020-09-25 05:34:25,359 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3270 transitions. Word has length 192 [2020-09-25 05:34:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:25,360 INFO L479 AbstractCegarLoop]: Abstraction has 2602 states and 3270 transitions. [2020-09-25 05:34:25,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3270 transitions. [2020-09-25 05:34:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 05:34:25,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:25,375 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:25,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:25,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2066223812, now seen corresponding path program 1 times [2020-09-25 05:34:25,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:25,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691079748] [2020-09-25 05:34:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking...