/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem02_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:52,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:52,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:52,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:52,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:52,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:52,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:52,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:52,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:52,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:52,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:52,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:52,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:52,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:52,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:52,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:52,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:52,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:52,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:52,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:52,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:52,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:52,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:52,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:52,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:52,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:52,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:52,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:52,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:52,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:52,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:52,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:52,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:52,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:52,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:52,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:52,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:52,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:52,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:52,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:52,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:52,796 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 10:09:52,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:52,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:52,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:52,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:52,823 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:52,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:52,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:52,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:52,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:52,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:52,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:52,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:52,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:52,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:52,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:52,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:52,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:52,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:52,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:52,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:52,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:52,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:52,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:52,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:52,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:52,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:52,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:52,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:52,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:52,828 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:09:53,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:53,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:53,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:53,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:53,335 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:53,336 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-25 10:09:53,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd51d8c69/7c68c099b821494e8d5e1e17e242e826/FLAGc3c96b465 [2020-09-25 10:09:54,088 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:54,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-25 10:09:54,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd51d8c69/7c68c099b821494e8d5e1e17e242e826/FLAGc3c96b465 [2020-09-25 10:09:54,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd51d8c69/7c68c099b821494e8d5e1e17e242e826 [2020-09-25 10:09:54,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:54,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:54,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:54,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:54,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:54,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:54" (1/1) ... [2020-09-25 10:09:54,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473f737c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:54, skipping insertion in model container [2020-09-25 10:09:54,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:54" (1/1) ... [2020-09-25 10:09:54,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:54,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:54,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:54,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:55,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:55,226 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:55,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55 WrapperNode [2020-09-25 10:09:55,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:55,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:55,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:55,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:55,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:55,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:55,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:55,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:55,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (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 10:09:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:56,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:56,827 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:56,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:56 BoogieIcfgContainer [2020-09-25 10:09:56,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:56,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:56,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:56,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:56,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:54" (1/3) ... [2020-09-25 10:09:56,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d7f2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:56, skipping insertion in model container [2020-09-25 10:09:56,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55" (2/3) ... [2020-09-25 10:09:56,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d7f2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:56, skipping insertion in model container [2020-09-25 10:09:56,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:56" (3/3) ... [2020-09-25 10:09:56,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label35.c [2020-09-25 10:09:56,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:56,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:56,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:56,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:56,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:56,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:56,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:56,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:56,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:56,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:56,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 10:09:57,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:57,004 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] [2020-09-25 10:09:57,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash -691491799, now seen corresponding path program 1 times [2020-09-25 10:09:57,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:57,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806188716] [2020-09-25 10:09:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 10:10:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:10:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:02,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:10:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 10:10:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:10:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:10:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:02,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:02,604 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 10:10:02,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806188716] [2020-09-25 10:10:02,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:02,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:02,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902380629] [2020-09-25 10:10:02,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:02,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:02,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:02,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:02,643 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:05,039 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 10:10:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:05,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 10:10:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:05,092 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 10:10:05,093 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 10:10:05,108 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 10:10:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 10:10:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 10:10:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 10:10:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 10:10:05,253 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 120 [2020-09-25 10:10:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:05,254 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 10:10:05,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 10:10:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 10:10:05,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:05,266 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:10:05,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:05,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:05,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1698265725, now seen corresponding path program 1 times [2020-09-25 10:10:05,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:05,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198093290] [2020-09-25 10:10:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 10:10:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:10:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:10,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 10:10:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:10,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:10,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:10,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:10:10,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:10,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:10,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:10,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198093290] [2020-09-25 10:10:10,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:10,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:10,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775909965] [2020-09-25 10:10:10,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:10,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:10,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:10,589 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 10:10:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:12,327 INFO L93 Difference]: Finished difference Result 1626 states and 2090 transitions. [2020-09-25 10:10:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:10:12,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 10:10:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:12,342 INFO L225 Difference]: With dead ends: 1626 [2020-09-25 10:10:12,342 INFO L226 Difference]: Without dead ends: 983 [2020-09-25 10:10:12,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-25 10:10:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 971. [2020-09-25 10:10:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 10:10:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1222 transitions. [2020-09-25 10:10:12,386 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1222 transitions. Word has length 138 [2020-09-25 10:10:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:12,387 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1222 transitions. [2020-09-25 10:10:12,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1222 transitions. [2020-09-25 10:10:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 10:10:12,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:12,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:12,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:12,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:12,397 INFO L82 PathProgramCache]: Analyzing trace with hash 531796658, now seen corresponding path program 1 times [2020-09-25 10:10:12,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:12,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648267590] [2020-09-25 10:10:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 10:10:17,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:17,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:10:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:10:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:10:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:18,188 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-09-25 10:10:18,459 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-09-25 10:10:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:18,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:18,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:10:18,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:18,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:10:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 10:10:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:18,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:10:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:19,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648267590] [2020-09-25 10:10:19,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:19,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:10:19,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317281098] [2020-09-25 10:10:19,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:10:19,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:19,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:10:19,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:10:19,171 INFO L87 Difference]: Start difference. First operand 971 states and 1222 transitions. Second operand 16 states. [2020-09-25 10:10:23,545 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-25 10:10:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:23,980 INFO L93 Difference]: Finished difference Result 3405 states and 4577 transitions. [2020-09-25 10:10:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:10:23,981 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 164 [2020-09-25 10:10:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:23,995 INFO L225 Difference]: With dead ends: 3405 [2020-09-25 10:10:23,995 INFO L226 Difference]: Without dead ends: 2456 [2020-09-25 10:10:24,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:10:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2020-09-25 10:10:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2049. [2020-09-25 10:10:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2020-09-25 10:10:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2603 transitions. [2020-09-25 10:10:24,093 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2603 transitions. Word has length 164 [2020-09-25 10:10:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:24,095 INFO L479 AbstractCegarLoop]: Abstraction has 2049 states and 2603 transitions. [2020-09-25 10:10:24,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:10:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2603 transitions. [2020-09-25 10:10:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 10:10:24,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:24,106 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:24,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:24,106 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2050522244, now seen corresponding path program 1 times [2020-09-25 10:10:24,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:24,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174261348] [2020-09-25 10:10:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:29,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 10:10:29,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 10:10:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:29,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:29,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:29,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:10:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:29,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:10:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 10:10:29,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:29,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:10:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 10:10:29,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174261348] [2020-09-25 10:10:29,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:29,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:29,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3022316] [2020-09-25 10:10:29,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:29,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:29,517 INFO L87 Difference]: Start difference. First operand 2049 states and 2603 transitions. Second operand 6 states. [2020-09-25 10:10:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:31,185 INFO L93 Difference]: Finished difference Result 5238 states and 7009 transitions. [2020-09-25 10:10:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:31,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-25 10:10:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:31,207 INFO L225 Difference]: With dead ends: 5238 [2020-09-25 10:10:31,207 INFO L226 Difference]: Without dead ends: 3211 [2020-09-25 10:10:31,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-09-25 10:10:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2506. [2020-09-25 10:10:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-09-25 10:10:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3294 transitions. [2020-09-25 10:10:31,331 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3294 transitions. Word has length 176 [2020-09-25 10:10:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:31,331 INFO L479 AbstractCegarLoop]: Abstraction has 2506 states and 3294 transitions. [2020-09-25 10:10:31,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3294 transitions. [2020-09-25 10:10:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 10:10:31,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:31,343 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, 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] [2020-09-25 10:10:31,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:31,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:31,344 INFO L82 PathProgramCache]: Analyzing trace with hash -360311521, now seen corresponding path program 1 times [2020-09-25 10:10:31,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:31,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853545510] [2020-09-25 10:10:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 10:10:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 10:10:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 10:10:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 10:10:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:10:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:10:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:10:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:10:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:10:36,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:10:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:10:36,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853545510] [2020-09-25 10:10:36,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:36,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:10:36,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664068024] [2020-09-25 10:10:36,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:10:36,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:10:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:36,904 INFO L87 Difference]: Start difference. First operand 2506 states and 3294 transitions. Second operand 7 states. [2020-09-25 10:10:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:39,432 INFO L93 Difference]: Finished difference Result 6444 states and 8713 transitions. [2020-09-25 10:10:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:10:39,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-09-25 10:10:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:39,458 INFO L225 Difference]: With dead ends: 6444 [2020-09-25 10:10:39,458 INFO L226 Difference]: Without dead ends: 3960 [2020-09-25 10:10:39,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 10:10:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2020-09-25 10:10:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 3594. [2020-09-25 10:10:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-09-25 10:10:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4552 transitions. [2020-09-25 10:10:39,574 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4552 transitions. Word has length 198 [2020-09-25 10:10:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:39,574 INFO L479 AbstractCegarLoop]: Abstraction has 3594 states and 4552 transitions. [2020-09-25 10:10:39,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:10:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4552 transitions. [2020-09-25 10:10:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 10:10:39,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:39,588 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, 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] [2020-09-25 10:10:39,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:10:39,589 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1688230851, now seen corresponding path program 1 times [2020-09-25 10:10:39,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:39,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372744173] [2020-09-25 10:10:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking...