/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:23,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:23,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:23,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:23,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:23,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:23,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:23,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:23,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:23,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:23,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:23,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:23,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:23,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:23,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:23,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:23,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:23,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:23,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:23,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:23,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:23,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:23,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:23,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:23,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:23,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:23,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:23,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:23,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:23,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:23,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:23,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:23,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:23,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:23,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:23,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:23,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:23,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:23,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:23,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:23,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:23,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:35:23,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:23,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:23,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:23,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:23,353 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:23,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:23,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:23,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:23,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:23,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:23,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:23,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:23,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:23,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:23,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:23,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:23,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:23,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:23,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:23,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:23,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:23,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:23,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:23,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:23,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:23,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:23,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:23,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:23,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:23,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:35:23,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:23,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:23,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:23,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:23,878 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:23,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 05:35:23,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca287deff/7d164c29b3034ab1b4380ee79ceb4260/FLAG92959051c [2020-09-25 05:35:24,574 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:24,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 05:35:24,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca287deff/7d164c29b3034ab1b4380ee79ceb4260/FLAG92959051c [2020-09-25 05:35:24,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca287deff/7d164c29b3034ab1b4380ee79ceb4260 [2020-09-25 05:35:24,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:24,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:24,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:24,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:24,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:24,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:24" (1/1) ... [2020-09-25 05:35:24,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c5cb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:24, skipping insertion in model container [2020-09-25 05:35:24,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:24" (1/1) ... [2020-09-25 05:35:24,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:24,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:25,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:25,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:25,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:25,685 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:25,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25 WrapperNode [2020-09-25 05:35:25,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:25,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:25,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:25,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:25,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... [2020-09-25 05:35:25,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:25,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:25,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:25,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:25,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:25,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:25,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:25,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:25,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:27,671 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:27,672 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:27,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:27 BoogieIcfgContainer [2020-09-25 05:35:27,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:27,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:27,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:27,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:27,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:24" (1/3) ... [2020-09-25 05:35:27,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b53775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:27, skipping insertion in model container [2020-09-25 05:35:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:25" (2/3) ... [2020-09-25 05:35:27,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b53775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:27, skipping insertion in model container [2020-09-25 05:35:27,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:27" (3/3) ... [2020-09-25 05:35:27,693 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2020-09-25 05:35:27,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:27,719 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:27,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:27,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:27,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:27,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:27,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:27,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:27,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:27,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:27,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:35:27,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:27,855 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] [2020-09-25 05:35:27,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 463353353, now seen corresponding path program 1 times [2020-09-25 05:35:27,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:27,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677215828] [2020-09-25 05:35:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 05:35:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 05:35:33,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:35:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 05:35:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:35:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:35:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:35:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:33,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677215828] [2020-09-25 05:35:33,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:33,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:35:33,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210811043] [2020-09-25 05:35:33,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:35:33,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:35:33,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:35:33,627 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:35:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:36,198 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:35:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:36,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 05:35:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:36,226 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:35:36,226 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:35:36,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:35:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:35:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:35:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:35:36,357 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 144 [2020-09-25 05:35:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:36,359 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:35:36,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:35:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:35:36,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:36,369 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] [2020-09-25 05:35:36,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:36,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1747040163, now seen corresponding path program 1 times [2020-09-25 05:35:36,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:36,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263997730] [2020-09-25 05:35:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:35:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:35:41,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:35:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:41,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:35:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:41,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263997730] [2020-09-25 05:35:41,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:41,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:41,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555959538] [2020-09-25 05:35:41,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:41,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:41,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:41,672 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:35:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:43,616 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 05:35:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:43,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 05:35:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:43,626 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 05:35:43,626 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 05:35:43,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 05:35:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 05:35:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 05:35:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 05:35:43,679 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 162 [2020-09-25 05:35:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:43,680 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 05:35:43,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 05:35:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 05:35:43,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:43,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:43,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:43,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:43,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1919685948, now seen corresponding path program 1 times [2020-09-25 05:35:43,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:43,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708058517] [2020-09-25 05:35:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 05:35:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:35:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:35:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 05:35:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:35:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:35:48,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:35:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:35:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:49,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708058517] [2020-09-25 05:35:49,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:49,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645623713] [2020-09-25 05:35:49,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:49,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:49,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:49,025 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 05:35:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:51,198 INFO L93 Difference]: Finished difference Result 2678 states and 3478 transitions. [2020-09-25 05:35:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:51,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 05:35:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:51,218 INFO L225 Difference]: With dead ends: 2678 [2020-09-25 05:35:51,219 INFO L226 Difference]: Without dead ends: 1664 [2020-09-25 05:35:51,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-25 05:35:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1644. [2020-09-25 05:35:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-09-25 05:35:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2012 transitions. [2020-09-25 05:35:51,308 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2012 transitions. Word has length 178 [2020-09-25 05:35:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:51,309 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2012 transitions. [2020-09-25 05:35:51,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2012 transitions. [2020-09-25 05:35:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:35:51,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:51,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:51,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:51,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1258115336, now seen corresponding path program 1 times [2020-09-25 05:35:51,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:51,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109668788] [2020-09-25 05:35:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:35:56,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:35:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:35:56,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:35:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:35:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:35:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:56,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:35:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:35:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:56,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109668788] [2020-09-25 05:35:56,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:56,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:56,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736082474] [2020-09-25 05:35:56,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:56,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:56,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:56,643 INFO L87 Difference]: Start difference. First operand 1644 states and 2012 transitions. Second operand 5 states. [2020-09-25 05:35:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:58,586 INFO L93 Difference]: Finished difference Result 4344 states and 5482 transitions. [2020-09-25 05:35:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:58,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 05:35:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:58,607 INFO L225 Difference]: With dead ends: 4344 [2020-09-25 05:35:58,607 INFO L226 Difference]: Without dead ends: 2722 [2020-09-25 05:35:58,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2020-09-25 05:35:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2549. [2020-09-25 05:35:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2549 states. [2020-09-25 05:35:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3209 transitions. [2020-09-25 05:35:58,735 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3209 transitions. Word has length 182 [2020-09-25 05:35:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:58,736 INFO L479 AbstractCegarLoop]: Abstraction has 2549 states and 3209 transitions. [2020-09-25 05:35:58,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3209 transitions. [2020-09-25 05:35:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 05:35:58,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:58,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:58,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:58,749 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1374839553, now seen corresponding path program 1 times [2020-09-25 05:35:58,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:58,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259986749] [2020-09-25 05:35:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:03,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 05:36:03,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:36:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:03,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 05:36:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:36:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:03,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:03,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:03,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:03,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:03,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:36:03,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:03,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:36:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:04,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:04,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 05:36:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:04,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:04,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259986749] [2020-09-25 05:36:04,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:04,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:04,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466136791] [2020-09-25 05:36:04,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:04,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:04,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:04,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:04,134 INFO L87 Difference]: Start difference. First operand 2549 states and 3209 transitions. Second operand 7 states. [2020-09-25 05:36:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:06,673 INFO L93 Difference]: Finished difference Result 5939 states and 7724 transitions. [2020-09-25 05:36:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:06,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 05:36:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:06,692 INFO L225 Difference]: With dead ends: 5939 [2020-09-25 05:36:06,692 INFO L226 Difference]: Without dead ends: 3412 [2020-09-25 05:36:06,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2020-09-25 05:36:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 2751. [2020-09-25 05:36:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-09-25 05:36:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3455 transitions. [2020-09-25 05:36:06,790 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3455 transitions. Word has length 222 [2020-09-25 05:36:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:06,791 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 3455 transitions. [2020-09-25 05:36:06,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3455 transitions. [2020-09-25 05:36:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 05:36:06,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:06,804 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:06,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:06,805 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:06,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1614351751, now seen corresponding path program 1 times [2020-09-25 05:36:06,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:06,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237974076] [2020-09-25 05:36:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 05:36:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:36:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 05:36:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:11,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 05:36:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:36:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:11,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:36:12,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:36:12,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:36:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:36:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:36:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:36:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:36:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:36:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 05:36:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:12,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:12,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:12,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:36:12,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:12,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-25 05:36:12,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237974076] [2020-09-25 05:36:12,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:12,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:12,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163476643] [2020-09-25 05:36:12,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:12,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:12,321 INFO L87 Difference]: Start difference. First operand 2751 states and 3455 transitions. Second operand 7 states.