/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=1.0 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:50,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:50,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:50,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:50,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:50,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:50,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:50,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:50,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:50,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:50,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:50,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:50,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:50,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:50,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:50,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:50,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:50,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:50,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:50,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:50,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:50,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:50,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:50,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:50,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:50,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:50,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:50,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:50,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:50,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:50,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:50,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:50,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:50,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:50,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:50,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:50,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:50,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:50,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:50,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:50,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:50,768 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 09:01:50,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:50,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:50,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:50,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:50,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:50,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:50,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:50,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:50,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:50,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:50,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:50,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:50,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:50,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:50,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:50,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:50,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:50,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:50,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:50,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:50,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:50,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:50,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:50,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:50,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:50,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:50,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:50,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:50,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:50,807 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:01:51,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:51,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:51,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:51,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:51,303 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:51,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 09:01:51,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339c0c39/bd605943da0b4353aa26cd8e575603da/FLAGf05bfb7e6 [2020-09-25 09:01:52,104 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:52,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 09:01:52,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339c0c39/bd605943da0b4353aa26cd8e575603da/FLAGf05bfb7e6 [2020-09-25 09:01:52,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339c0c39/bd605943da0b4353aa26cd8e575603da [2020-09-25 09:01:52,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:52,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:52,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:52,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:52,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:52,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:52" (1/1) ... [2020-09-25 09:01:52,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:52, skipping insertion in model container [2020-09-25 09:01:52,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:52" (1/1) ... [2020-09-25 09:01:52,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:52,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:52,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:52,954 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:53,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:53,277 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:53,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53 WrapperNode [2020-09-25 09:01:53,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:53,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:53,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:53,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:53,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (1/1) ... [2020-09-25 09:01:53,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:53,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:53,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:53,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:53,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (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 09:01:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:54,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:54,825 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:54,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:54 BoogieIcfgContainer [2020-09-25 09:01:54,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:54,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:54,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:54,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:54,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:52" (1/3) ... [2020-09-25 09:01:54,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:54, skipping insertion in model container [2020-09-25 09:01:54,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:53" (2/3) ... [2020-09-25 09:01:54,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:54, skipping insertion in model container [2020-09-25 09:01:54,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:54" (3/3) ... [2020-09-25 09:01:54,846 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-25 09:01:54,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:54,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:54,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:54,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:54,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:54,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:54,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:54,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:54,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:54,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:54,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:01:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:01:54,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:54,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:54,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:55,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-25 09:01:55,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:55,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-25 09:01:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:02:00,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:02:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:02:00,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:02:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 09:02:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:02:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:00,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:00,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:02:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,741 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 09:02:00,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-25 09:02:00,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:00,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:02:00,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812028419] [2020-09-25 09:02:00,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:00,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:00,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:00,781 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 09:02:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:03,369 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 09:02:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:02:03,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 09:02:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:03,401 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 09:02:03,401 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 09:02:03,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 09:02:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 09:02:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 09:02:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 09:02:03,551 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 152 [2020-09-25 09:02:03,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:03,552 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 09:02:03,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 09:02:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 09:02:03,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:03,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:03,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:03,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash 676695293, now seen corresponding path program 1 times [2020-09-25 09:02:03,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:03,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465476071] [2020-09-25 09:02:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:08,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 09:02:08,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:02:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:02:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:08,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:02:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 09:02:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:08,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:02:08,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:08,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:02:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:08,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:02:08,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:02:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465476071] [2020-09-25 09:02:08,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:08,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:02:08,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288230072] [2020-09-25 09:02:08,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:02:08,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:02:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:08,938 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 09:02:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:10,993 INFO L93 Difference]: Finished difference Result 1647 states and 2128 transitions. [2020-09-25 09:02:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:02:10,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-09-25 09:02:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:11,003 INFO L225 Difference]: With dead ends: 1647 [2020-09-25 09:02:11,004 INFO L226 Difference]: Without dead ends: 1004 [2020-09-25 09:02:11,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 09:02:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-09-25 09:02:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 816. [2020-09-25 09:02:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 09:02:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 09:02:11,049 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 170 [2020-09-25 09:02:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:11,049 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 09:02:11,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:02:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 09:02:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:02:11,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:11,055 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:11,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:11,056 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash 635789378, now seen corresponding path program 1 times [2020-09-25 09:02:11,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:11,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320908278] [2020-09-25 09:02:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:16,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:02:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:02:16,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:16,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 09:02:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:02:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:16,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:16,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:02:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:02:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:02:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:16,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320908278] [2020-09-25 09:02:16,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:16,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:16,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658661623] [2020-09-25 09:02:16,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:16,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:16,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:16,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:16,337 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 09:02:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:18,745 INFO L93 Difference]: Finished difference Result 2103 states and 2821 transitions. [2020-09-25 09:02:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:18,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 09:02:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:18,763 INFO L225 Difference]: With dead ends: 2103 [2020-09-25 09:02:18,763 INFO L226 Difference]: Without dead ends: 1309 [2020-09-25 09:02:18,769 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 09:02:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-09-25 09:02:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1272. [2020-09-25 09:02:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 09:02:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2020-09-25 09:02:18,827 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 178 [2020-09-25 09:02:18,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:18,828 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2020-09-25 09:02:18,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:18,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2020-09-25 09:02:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:02:18,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:18,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:18,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:18,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1868326385, now seen corresponding path program 1 times [2020-09-25 09:02:18,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:18,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075089176] [2020-09-25 09:02:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:20,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 09:02:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:02:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 09:02:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:23,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 09:02:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:02:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:02:24,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:24,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:24,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 09:02:24,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:02:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:24,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075089176] [2020-09-25 09:02:24,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:24,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:24,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606002971] [2020-09-25 09:02:24,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:24,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:24,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:24,257 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand 5 states. [2020-09-25 09:02:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:26,126 INFO L93 Difference]: Finished difference Result 3032 states and 3899 transitions. [2020-09-25 09:02:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:26,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 09:02:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:26,137 INFO L225 Difference]: With dead ends: 3032 [2020-09-25 09:02:26,137 INFO L226 Difference]: Without dead ends: 1782 [2020-09-25 09:02:26,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 09:02:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-09-25 09:02:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1578. [2020-09-25 09:02:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 09:02:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1918 transitions. [2020-09-25 09:02:26,206 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1918 transitions. Word has length 190 [2020-09-25 09:02:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:26,206 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1918 transitions. [2020-09-25 09:02:26,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:26,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1918 transitions. [2020-09-25 09:02:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 09:02:26,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:26,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:26,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:26,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:26,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1346453927, now seen corresponding path program 1 times [2020-09-25 09:02:26,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:26,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873858813] [2020-09-25 09:02:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 09:02:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:02:31,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 09:02:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:02:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:31,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:02:31,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:02:31,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:02:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:02:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:02:31,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:02:31,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:02:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873858813] [2020-09-25 09:02:31,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:31,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:31,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95573067] [2020-09-25 09:02:31,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:31,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:31,509 INFO L87 Difference]: Start difference. First operand 1578 states and 1918 transitions. Second operand 5 states. [2020-09-25 09:02:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:33,495 INFO L93 Difference]: Finished difference Result 3600 states and 4575 transitions. [2020-09-25 09:02:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:33,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-09-25 09:02:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:33,510 INFO L225 Difference]: With dead ends: 3600 [2020-09-25 09:02:33,511 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 09:02:33,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 09:02:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2031. [2020-09-25 09:02:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-25 09:02:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2566 transitions. [2020-09-25 09:02:33,586 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2566 transitions. Word has length 209 [2020-09-25 09:02:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:33,587 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2566 transitions. [2020-09-25 09:02:33,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2566 transitions. [2020-09-25 09:02:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 09:02:33,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:33,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:02:33,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:33,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:33,598 INFO L82 PathProgramCache]: Analyzing trace with hash 148312924, now seen corresponding path program 1 times [2020-09-25 09:02:33,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:33,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394469240] [2020-09-25 09:02:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 09:02:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:02:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:02:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:02:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 09:02:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:02:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:38,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394469240] [2020-09-25 09:02:38,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:38,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:02:38,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668673979] [2020-09-25 09:02:38,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:38,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:38,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:38,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:38,850 INFO L87 Difference]: Start difference. First operand 2031 states and 2566 transitions. Second operand 5 states. [2020-09-25 09:02:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:40,777 INFO L93 Difference]: Finished difference Result 5109 states and 6628 transitions. [2020-09-25 09:02:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:40,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-09-25 09:02:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:40,778 INFO L225 Difference]: With dead ends: 5109 [2020-09-25 09:02:40,778 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:02:40,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:02:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:02:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:02:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:02:40,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2020-09-25 09:02:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:40,794 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:02:40,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:02:40,794 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:02:40,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:02:40,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.