/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=LOWLEXORDER --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/Problem10_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:10,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:10,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:10,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:10,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:10,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:10,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:10,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:10,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:10,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:10,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:10,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:10,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:10,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:10,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:10,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:10,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:10,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:10,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:10,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:10,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:10,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:10,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:10,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:10,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:10,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:10,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:10,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:10,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:10,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:10,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:10,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:10,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:10,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:10,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:10,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:10,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:10,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:10,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:10,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:10,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:10,337 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 [2020-09-24 21:46:10,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:10,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:10,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:10,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:10,386 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:10,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:10,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:10,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:10,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:10,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:10,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:10,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:10,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:10,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:10,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:10,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:10,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:10,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:10,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:10,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:10,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:10,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:10,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:10,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:10,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:10,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:10,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:10,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:10,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:10,392 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:46:10,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:10,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:10,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:10,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:10,924 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:10,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-24 21:46:11,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54900b445/3ad6550176b743ffab816bc262829ae6/FLAGf36aa0f4f [2020-09-24 21:46:11,686 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:11,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-24 21:46:11,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54900b445/3ad6550176b743ffab816bc262829ae6/FLAGf36aa0f4f [2020-09-24 21:46:11,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54900b445/3ad6550176b743ffab816bc262829ae6 [2020-09-24 21:46:11,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:11,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:11,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:11,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:11,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:11,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:11" (1/1) ... [2020-09-24 21:46:11,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18215cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:11, skipping insertion in model container [2020-09-24 21:46:11,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:11" (1/1) ... [2020-09-24 21:46:11,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:12,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:12,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:12,599 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:12,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:12,735 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:12,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12 WrapperNode [2020-09-24 21:46:12,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:12,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:12,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:12,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:12,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (1/1) ... [2020-09-24 21:46:12,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:12,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:12,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:12,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:12,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (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 [2020-09-24 21:46:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:14,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:14,464 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:14,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:14 BoogieIcfgContainer [2020-09-24 21:46:14,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:14,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:14,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:14,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:11" (1/3) ... [2020-09-24 21:46:14,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:14, skipping insertion in model container [2020-09-24 21:46:14,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:12" (2/3) ... [2020-09-24 21:46:14,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:14, skipping insertion in model container [2020-09-24 21:46:14,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:14" (3/3) ... [2020-09-24 21:46:14,486 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-24 21:46:14,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:14,514 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:14,541 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:14,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:14,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:14,581 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:14,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:14,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:14,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:14,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:14,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:46:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 21:46:14,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:14,628 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] [2020-09-24 21:46:14,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-24 21:46:14,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:14,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631807811] [2020-09-24 21:46:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 21:46:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-09-24 21:46:16,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 21:46:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:46:16,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:16,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:16,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:46:16,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:16,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631807811] [2020-09-24 21:46:16,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:16,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:16,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920097201] [2020-09-24 21:46:16,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:16,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:16,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:16,395 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:46:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:18,766 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:46:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:18,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-24 21:46:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:18,793 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:46:18,794 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:46:18,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:46:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:46:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:46:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:46:18,910 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 61 [2020-09-24 21:46:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:18,910 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:46:18,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:46:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 21:46:18,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:18,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:18,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:18,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-24 21:46:18,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:18,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023922393] [2020-09-24 21:46:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 21:46:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:46:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:46:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:24,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:46:24,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:24,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:24,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:24,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 21:46:24,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 21:46:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:24,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023922393] [2020-09-24 21:46:24,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:24,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:24,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713342066] [2020-09-24 21:46:24,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:24,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:24,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:24,468 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:46:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:26,581 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:46:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:46:26,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-24 21:46:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:26,591 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:46:26,592 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:46:26,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:46:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:46:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:46:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:46:26,653 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 144 [2020-09-24 21:46:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:26,654 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:46:26,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:46:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 21:46:26,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:26,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:26,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:26,659 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash 2467362, now seen corresponding path program 1 times [2020-09-24 21:46:26,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:26,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302583688] [2020-09-24 21:46:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:29,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 21:46:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3213 [2020-09-24 21:46:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:46:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-24 21:46:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:30,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:46:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:30,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:30,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 21:46:30,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:30,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302583688] [2020-09-24 21:46:30,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:30,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:30,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526859262] [2020-09-24 21:46:30,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:30,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:30,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:30,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:30,683 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:46:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:33,692 INFO L93 Difference]: Finished difference Result 1820 states and 2324 transitions. [2020-09-24 21:46:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:33,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2020-09-24 21:46:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:33,700 INFO L225 Difference]: With dead ends: 1820 [2020-09-24 21:46:33,700 INFO L226 Difference]: Without dead ends: 1104 [2020-09-24 21:46:33,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-09-24 21:46:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 886. [2020-09-24 21:46:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:46:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1118 transitions. [2020-09-24 21:46:33,743 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1118 transitions. Word has length 144 [2020-09-24 21:46:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:33,743 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1118 transitions. [2020-09-24 21:46:33,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1118 transitions. [2020-09-24 21:46:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 21:46:33,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:33,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:33,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:33,747 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:33,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-24 21:46:33,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:33,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016651106] [2020-09-24 21:46:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:46:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-09-24 21:46:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:37,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:46:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 21:46:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:38,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016651106] [2020-09-24 21:46:38,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:38,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:46:38,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082464098] [2020-09-24 21:46:38,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:46:38,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:38,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:46:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:38,461 INFO L87 Difference]: Start difference. First operand 886 states and 1118 transitions. Second operand 12 states. [2020-09-24 21:46:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:41,734 INFO L93 Difference]: Finished difference Result 1684 states and 2194 transitions. [2020-09-24 21:46:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:41,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-09-24 21:46:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:41,740 INFO L225 Difference]: With dead ends: 1684 [2020-09-24 21:46:41,741 INFO L226 Difference]: Without dead ends: 935 [2020-09-24 21:46:41,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:46:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-24 21:46:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 884. [2020-09-24 21:46:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-24 21:46:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1112 transitions. [2020-09-24 21:46:41,781 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1112 transitions. Word has length 150 [2020-09-24 21:46:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:41,782 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1112 transitions. [2020-09-24 21:46:41,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1112 transitions. [2020-09-24 21:46:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 21:46:41,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:41,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:41,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:41,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash -967098922, now seen corresponding path program 1 times [2020-09-24 21:46:41,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:41,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856195940] [2020-09-24 21:46:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:46,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 21:46:46,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:46:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:46,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:46,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 21:46:47,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:47,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:47,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 21:46:47,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:46:47,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856195940] [2020-09-24 21:46:47,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:47,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:47,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779905136] [2020-09-24 21:46:47,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:47,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:47,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:47,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:47,540 INFO L87 Difference]: Start difference. First operand 884 states and 1112 transitions. Second operand 8 states. [2020-09-24 21:46:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:49,763 INFO L93 Difference]: Finished difference Result 1967 states and 2636 transitions. [2020-09-24 21:46:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:49,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-24 21:46:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:49,771 INFO L225 Difference]: With dead ends: 1967 [2020-09-24 21:46:49,771 INFO L226 Difference]: Without dead ends: 1248 [2020-09-24 21:46:49,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-09-24 21:46:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1210. [2020-09-24 21:46:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-24 21:46:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1559 transitions. [2020-09-24 21:46:49,813 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1559 transitions. Word has length 223 [2020-09-24 21:46:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:49,814 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1559 transitions. [2020-09-24 21:46:49,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1559 transitions. [2020-09-24 21:46:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 21:46:49,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:49,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:49,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:49,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:49,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:49,819 INFO L82 PathProgramCache]: Analyzing trace with hash 139673377, now seen corresponding path program 1 times [2020-09-24 21:46:49,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:49,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457773793] [2020-09-24 21:46:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:46:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:46:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-24 21:46:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:54,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:54,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:46:54,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:55,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:55,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 21:46:55,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:55,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:55,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:46:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:55,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457773793] [2020-09-24 21:46:55,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:55,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:46:55,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632265623] [2020-09-24 21:46:55,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:46:55,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:55,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:46:55,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:55,437 INFO L87 Difference]: Start difference. First operand 1210 states and 1559 transitions. Second operand 10 states. [2020-09-24 21:46:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:59,872 INFO L93 Difference]: Finished difference Result 3674 states and 5125 transitions. [2020-09-24 21:46:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:46:59,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 229 [2020-09-24 21:46:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:59,893 INFO L225 Difference]: With dead ends: 3674 [2020-09-24 21:46:59,893 INFO L226 Difference]: Without dead ends: 2629 [2020-09-24 21:46:59,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:46:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2020-09-24 21:46:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2209. [2020-09-24 21:46:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2020-09-24 21:46:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2843 transitions. [2020-09-24 21:46:59,985 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2843 transitions. Word has length 229 [2020-09-24 21:46:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:59,986 INFO L479 AbstractCegarLoop]: Abstraction has 2209 states and 2843 transitions. [2020-09-24 21:46:59,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:46:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2843 transitions. [2020-09-24 21:46:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 21:46:59,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:59,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:59,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:46:59,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:59,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1321393439, now seen corresponding path program 1 times [2020-09-24 21:46:59,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:59,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336986653] [2020-09-24 21:46:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking...