/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:33:29,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:33:29,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:33:29,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:33:29,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:33:29,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:33:29,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:33:29,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:33:29,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:33:29,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:33:29,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:33:29,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:33:29,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:33:29,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:33:29,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:33:29,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:33:29,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:33:29,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:33:29,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:33:29,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:33:29,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:33:29,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:33:29,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:33:29,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:33:29,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:33:29,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:33:29,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:33:29,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:33:29,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:33:29,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:33:29,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:33:29,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:33:29,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:33:29,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:33:29,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:33:29,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:33:29,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:33:29,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:33:29,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:33:29,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:33:29,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:33:29,591 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 [2020-10-26 20:33:29,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:33:29,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:33:29,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:33:29,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:33:29,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:33:29,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:33:29,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:33:29,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:33:29,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:33:29,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:33:29,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:33:29,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:33:29,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:33:29,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:33:29,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:33:29,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:33:29,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:33:29,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:33:29,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:33:29,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:33:29,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:33:29,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:33:29,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:33:29,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:33:29,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:33:29,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:33:29,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:33:29,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:33:29,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:33:29,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:33:30,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:33:30,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:33:30,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:33:30,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:33:30,162 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:33:30,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-10-26 20:33:30,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910941535/b4cb9d8b1aa24e45afff3e0b566fbd3b/FLAGe43f3debc [2020-10-26 20:33:31,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:33:31,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-10-26 20:33:31,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910941535/b4cb9d8b1aa24e45afff3e0b566fbd3b/FLAGe43f3debc [2020-10-26 20:33:31,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910941535/b4cb9d8b1aa24e45afff3e0b566fbd3b [2020-10-26 20:33:31,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:33:31,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:33:31,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:33:31,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:33:31,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:33:31,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:33:31" (1/1) ... [2020-10-26 20:33:31,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347fc094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:31, skipping insertion in model container [2020-10-26 20:33:31,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:33:31" (1/1) ... [2020-10-26 20:33:31,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:33:31,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:33:31,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:33:31,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:33:32,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:33:32,149 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:33:32,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32 WrapperNode [2020-10-26 20:33:32,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:33:32,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:33:32,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:33:32,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:33:32,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (1/1) ... [2020-10-26 20:33:32,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:33:32,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:33:32,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:33:32,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:33:32,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (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 [2020-10-26 20:33:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:33:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:33:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:33:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:33:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:33:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:33:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:33:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:33:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:33:34,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:33:34,327 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:33:34,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:33:34 BoogieIcfgContainer [2020-10-26 20:33:34,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:33:34,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:33:34,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:33:34,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:33:34,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:33:31" (1/3) ... [2020-10-26 20:33:34,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6171df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:33:34, skipping insertion in model container [2020-10-26 20:33:34,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:33:32" (2/3) ... [2020-10-26 20:33:34,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6171df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:33:34, skipping insertion in model container [2020-10-26 20:33:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:33:34" (3/3) ... [2020-10-26 20:33:34,339 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-10-26 20:33:34,353 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:33:34,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:33:34,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:33:34,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:33:34,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:33:34,402 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:33:34,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:33:34,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:33:34,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:33:34,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:33:34,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:33:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:33:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 20:33:34,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:33:34,442 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] [2020-10-26 20:33:34,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:33:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:33:34,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1315592841, now seen corresponding path program 1 times [2020-10-26 20:33:34,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:33:34,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822288531] [2020-10-26 20:33:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:33:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:37,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:37,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 20:33:37,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:33:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2361 [2020-10-26 20:33:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:33:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:33:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 20:33:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:33:37,920 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-26 20:33:38,108 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-26 20:33:38,430 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-26 20:33:38,749 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 45 [2020-10-26 20:33:39,072 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-10-26 20:33:39,361 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-26 20:33:39,626 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-10-26 20:33:39,841 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2020-10-26 20:33:40,068 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:33:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:33:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:33:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:33:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:33:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:33:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:33:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:33:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:33:40,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822288531] [2020-10-26 20:33:40,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:33:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:33:40,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131834091] [2020-10-26 20:33:40,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:33:40,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:33:40,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:33:40,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:33:40,411 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 12 states. [2020-10-26 20:33:40,820 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-26 20:33:41,220 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-26 20:33:41,598 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-26 20:33:42,071 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-26 20:33:42,973 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2020-10-26 20:33:44,349 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2020-10-26 20:33:45,559 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 126 [2020-10-26 20:33:46,935 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 123 [2020-10-26 20:33:48,000 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 118 [2020-10-26 20:33:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:33:49,828 INFO L93 Difference]: Finished difference Result 479 states and 799 transitions. [2020-10-26 20:33:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:33:49,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2020-10-26 20:33:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:33:49,850 INFO L225 Difference]: With dead ends: 479 [2020-10-26 20:33:49,850 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 20:33:49,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:33:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 20:33:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 20:33:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 20:33:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2020-10-26 20:33:49,949 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 110 [2020-10-26 20:33:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:33:49,950 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2020-10-26 20:33:49,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:33:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2020-10-26 20:33:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-26 20:33:49,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:33:49,956 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:33:49,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:33:49,957 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:33:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:33:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1773105447, now seen corresponding path program 1 times [2020-10-26 20:33:49,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:33:49,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061553144] [2020-10-26 20:33:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:33:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 20:33:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:33:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1696 [2020-10-26 20:33:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:33:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:33:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 20:33:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 20:33:52,035 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:33:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:33:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:33:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:33:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:33:52,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:33:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:33:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:33:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:33:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:33:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:33:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:33:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:33:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:33:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:33:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:33:52,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061553144] [2020-10-26 20:33:52,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:33:52,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:33:52,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044292338] [2020-10-26 20:33:52,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:33:52,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:33:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:33:52,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:33:52,212 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 6 states. [2020-10-26 20:33:52,434 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:33:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:33:54,431 INFO L93 Difference]: Finished difference Result 485 states and 696 transitions. [2020-10-26 20:33:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:33:54,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-26 20:33:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:33:54,444 INFO L225 Difference]: With dead ends: 485 [2020-10-26 20:33:54,444 INFO L226 Difference]: Without dead ends: 345 [2020-10-26 20:33:54,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:33:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-26 20:33:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-26 20:33:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-26 20:33:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2020-10-26 20:33:54,517 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 118 [2020-10-26 20:33:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:33:54,518 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2020-10-26 20:33:54,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:33:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2020-10-26 20:33:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 20:33:54,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:33:54,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 20:33:54,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:33:54,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:33:54,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:33:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1705593420, now seen corresponding path program 1 times [2020-10-26 20:33:54,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:33:54,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785698505] [2020-10-26 20:33:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:33:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:59,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 20:33:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:33:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 20:33:59,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:33:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:33:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:33:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:59,816 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:33:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:33:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:33:59,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:33:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:33:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:33:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:33:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:33:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:33:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:33:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:33:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:33:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:33:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:33:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:33:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:33:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:33:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:33:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:33:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:33:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:33:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:33:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:33:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:33:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:33:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:34:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785698505] [2020-10-26 20:34:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:00,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:34:00,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144249714] [2020-10-26 20:34:00,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:34:00,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:34:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:34:00,066 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand 8 states. [2020-10-26 20:34:00,282 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:34:02,508 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:34:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:02,656 INFO L93 Difference]: Finished difference Result 910 states and 1288 transitions. [2020-10-26 20:34:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:34:02,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-26 20:34:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:02,662 INFO L225 Difference]: With dead ends: 910 [2020-10-26 20:34:02,662 INFO L226 Difference]: Without dead ends: 633 [2020-10-26 20:34:02,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:34:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-26 20:34:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 623. [2020-10-26 20:34:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-26 20:34:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 840 transitions. [2020-10-26 20:34:02,710 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 840 transitions. Word has length 127 [2020-10-26 20:34:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:02,713 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 840 transitions. [2020-10-26 20:34:02,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:34:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 840 transitions. [2020-10-26 20:34:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 20:34:02,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:02,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:34:02,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:34:02,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:02,722 INFO L82 PathProgramCache]: Analyzing trace with hash -130945467, now seen corresponding path program 1 times [2020-10-26 20:34:02,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:02,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973820432] [2020-10-26 20:34:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:07,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:07,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 20:34:07,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:34:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 20:34:07,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:34:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:34:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 20:34:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:07,989 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:08,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:08,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:34:08,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:34:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:34:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:34:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:34:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:34:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:34:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:34:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:34:08,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973820432] [2020-10-26 20:34:08,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:08,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:34:08,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384764949] [2020-10-26 20:34:08,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:34:08,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:08,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:34:08,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:34:08,213 INFO L87 Difference]: Start difference. First operand 623 states and 840 transitions. Second operand 7 states. [2020-10-26 20:34:08,427 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:34:10,097 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:34:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:11,214 INFO L93 Difference]: Finished difference Result 1760 states and 2446 transitions. [2020-10-26 20:34:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:34:11,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-26 20:34:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:11,228 INFO L225 Difference]: With dead ends: 1760 [2020-10-26 20:34:11,228 INFO L226 Difference]: Without dead ends: 1203 [2020-10-26 20:34:11,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:34:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-10-26 20:34:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1195. [2020-10-26 20:34:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-10-26 20:34:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1585 transitions. [2020-10-26 20:34:11,294 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1585 transitions. Word has length 134 [2020-10-26 20:34:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:11,294 INFO L481 AbstractCegarLoop]: Abstraction has 1195 states and 1585 transitions. [2020-10-26 20:34:11,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:34:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1585 transitions. [2020-10-26 20:34:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 20:34:11,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:11,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:34:11,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:34:11,303 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1976558041, now seen corresponding path program 1 times [2020-10-26 20:34:11,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:11,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994313337] [2020-10-26 20:34:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:16,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 20:34:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 20:34:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:34:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:34:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:34:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:16,544 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:16,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:34:16,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:34:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:16,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:16,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:34:16,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:34:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:34:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:34:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:34:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:34:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:34:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 20:34:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:34:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:34:16,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994313337] [2020-10-26 20:34:16,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:16,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:34:16,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976516558] [2020-10-26 20:34:16,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:34:16,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:16,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:34:16,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:34:16,894 INFO L87 Difference]: Start difference. First operand 1195 states and 1585 transitions. Second operand 8 states. [2020-10-26 20:34:17,149 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:34:18,793 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:34:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:19,983 INFO L93 Difference]: Finished difference Result 2360 states and 3192 transitions. [2020-10-26 20:34:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:34:19,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-26 20:34:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:19,994 INFO L225 Difference]: With dead ends: 2360 [2020-10-26 20:34:19,994 INFO L226 Difference]: Without dead ends: 1231 [2020-10-26 20:34:19,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:34:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-10-26 20:34:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1213. [2020-10-26 20:34:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-26 20:34:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1601 transitions. [2020-10-26 20:34:20,055 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1601 transitions. Word has length 140 [2020-10-26 20:34:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:20,055 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 1601 transitions. [2020-10-26 20:34:20,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:34:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1601 transitions. [2020-10-26 20:34:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-26 20:34:20,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:20,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-26 20:34:20,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:34:20,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 271349095, now seen corresponding path program 1 times [2020-10-26 20:34:20,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:20,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761303162] [2020-10-26 20:34:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:34:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:25,294 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:25,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:34:25,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:25,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:25,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:34:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:34:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:34:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:34:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:25,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:25,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:34:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:34:25,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:34:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:34:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:34:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:34:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:34:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:34:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:34:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:34:25,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761303162] [2020-10-26 20:34:25,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:25,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:34:25,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700454870] [2020-10-26 20:34:25,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:34:25,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:25,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:34:25,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:34:25,536 INFO L87 Difference]: Start difference. First operand 1213 states and 1601 transitions. Second operand 7 states. [2020-10-26 20:34:26,006 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:34:26,239 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:34:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:29,174 INFO L93 Difference]: Finished difference Result 2781 states and 3717 transitions. [2020-10-26 20:34:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:34:29,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-26 20:34:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:29,194 INFO L225 Difference]: With dead ends: 2781 [2020-10-26 20:34:29,194 INFO L226 Difference]: Without dead ends: 1634 [2020-10-26 20:34:29,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:34:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-10-26 20:34:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1481. [2020-10-26 20:34:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-10-26 20:34:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1858 transitions. [2020-10-26 20:34:29,260 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1858 transitions. Word has length 142 [2020-10-26 20:34:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:29,260 INFO L481 AbstractCegarLoop]: Abstraction has 1481 states and 1858 transitions. [2020-10-26 20:34:29,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:34:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1858 transitions. [2020-10-26 20:34:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-26 20:34:29,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:29,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:34:29,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:34:29,267 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash -356191988, now seen corresponding path program 1 times [2020-10-26 20:34:29,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:29,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807960353] [2020-10-26 20:34:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:31,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:31,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 20:34:31,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:34:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-26 20:34:31,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:34:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:34:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:34:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:31,426 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:31,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:31,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:31,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:31,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:31,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:34:31,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:31,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:31,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:34:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:31,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:34:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:34:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:34:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:34:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:34:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:31,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:31,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:34:31,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 20:34:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:34:31,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807960353] [2020-10-26 20:34:31,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:31,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:34:31,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342713186] [2020-10-26 20:34:31,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:34:31,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:31,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:34:31,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:34:31,705 INFO L87 Difference]: Start difference. First operand 1481 states and 1858 transitions. Second operand 8 states. [2020-10-26 20:34:31,924 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:34:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:34,114 INFO L93 Difference]: Finished difference Result 2771 states and 3454 transitions. [2020-10-26 20:34:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:34:34,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-10-26 20:34:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:34,125 INFO L225 Difference]: With dead ends: 2771 [2020-10-26 20:34:34,125 INFO L226 Difference]: Without dead ends: 1765 [2020-10-26 20:34:34,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:34:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-10-26 20:34:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2020-10-26 20:34:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-10-26 20:34:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2169 transitions. [2020-10-26 20:34:34,194 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2169 transitions. Word has length 141 [2020-10-26 20:34:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:34,195 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2169 transitions. [2020-10-26 20:34:34,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:34:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2169 transitions. [2020-10-26 20:34:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-26 20:34:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:34,202 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:34:34,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:34:34,202 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash -795438362, now seen corresponding path program 1 times [2020-10-26 20:34:34,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:34,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706967945] [2020-10-26 20:34:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:37,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 20:34:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-10-26 20:34:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:34:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:34:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 20:34:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:37,582 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:34:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:37,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:34:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:34:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:37,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:34:37,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:34:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:34:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 20:34:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:37,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:37,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:34:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:34:37,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:37,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:34:37,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706967945] [2020-10-26 20:34:37,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:37,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:34:37,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703349362] [2020-10-26 20:34:37,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:34:37,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:34:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:34:37,862 INFO L87 Difference]: Start difference. First operand 1763 states and 2169 transitions. Second operand 8 states. [2020-10-26 20:34:38,108 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:34:40,240 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:34:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:40,954 INFO L93 Difference]: Finished difference Result 3341 states and 4095 transitions. [2020-10-26 20:34:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:34:40,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-10-26 20:34:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:40,973 INFO L225 Difference]: With dead ends: 3341 [2020-10-26 20:34:40,974 INFO L226 Difference]: Without dead ends: 2047 [2020-10-26 20:34:40,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:34:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2020-10-26 20:34:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2041. [2020-10-26 20:34:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2041 states. [2020-10-26 20:34:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2504 transitions. [2020-10-26 20:34:41,046 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2504 transitions. Word has length 153 [2020-10-26 20:34:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:41,047 INFO L481 AbstractCegarLoop]: Abstraction has 2041 states and 2504 transitions. [2020-10-26 20:34:41,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:34:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2504 transitions. [2020-10-26 20:34:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-26 20:34:41,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:41,054 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:34:41,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:34:41,054 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 982956007, now seen corresponding path program 1 times [2020-10-26 20:34:41,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:41,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582033271] [2020-10-26 20:34:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:43,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 20:34:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2780 [2020-10-26 20:34:43,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:34:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:34:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:34:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:44,066 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:34:44,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:34:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:34:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:34:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:34:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:34:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:34:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:44,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:44,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:34:44,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:34:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 20:34:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:44,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:34:44,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:34:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:34:44,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582033271] [2020-10-26 20:34:44,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:44,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:34:44,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971517817] [2020-10-26 20:34:44,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:34:44,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:34:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:34:44,352 INFO L87 Difference]: Start difference. First operand 2041 states and 2504 transitions. Second operand 8 states. [2020-10-26 20:34:44,584 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:34:46,458 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:34:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:47,211 INFO L93 Difference]: Finished difference Result 3488 states and 4236 transitions. [2020-10-26 20:34:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:34:47,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-10-26 20:34:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:47,222 INFO L225 Difference]: With dead ends: 3488 [2020-10-26 20:34:47,222 INFO L226 Difference]: Without dead ends: 1902 [2020-10-26 20:34:47,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:34:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-10-26 20:34:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1894. [2020-10-26 20:34:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2020-10-26 20:34:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2188 transitions. [2020-10-26 20:34:47,291 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2188 transitions. Word has length 156 [2020-10-26 20:34:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:47,291 INFO L481 AbstractCegarLoop]: Abstraction has 1894 states and 2188 transitions. [2020-10-26 20:34:47,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:34:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2188 transitions. [2020-10-26 20:34:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-26 20:34:47,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:47,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:34:47,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:34:47,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash -624833431, now seen corresponding path program 1 times [2020-10-26 20:34:47,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:47,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323256681] [2020-10-26 20:34:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3040 [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:34:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:34:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,604 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:50,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:34:50,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:50,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:34:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:34:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:34:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:34:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:34:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:34:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:34:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:34:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 20:34:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:34:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:34:50,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323256681] [2020-10-26 20:34:50,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:50,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:34:50,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97485117] [2020-10-26 20:34:50,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:34:50,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:50,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:34:50,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:34:50,961 INFO L87 Difference]: Start difference. First operand 1894 states and 2188 transitions. Second operand 9 states. [2020-10-26 20:34:51,228 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:34:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:34:53,739 INFO L93 Difference]: Finished difference Result 4707 states and 5567 transitions. [2020-10-26 20:34:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:34:53,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-26 20:34:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:34:53,759 INFO L225 Difference]: With dead ends: 4707 [2020-10-26 20:34:53,759 INFO L226 Difference]: Without dead ends: 3014 [2020-10-26 20:34:53,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:34:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-10-26 20:34:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 2984. [2020-10-26 20:34:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-10-26 20:34:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3452 transitions. [2020-10-26 20:34:53,848 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3452 transitions. Word has length 166 [2020-10-26 20:34:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:34:53,849 INFO L481 AbstractCegarLoop]: Abstraction has 2984 states and 3452 transitions. [2020-10-26 20:34:53,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:34:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3452 transitions. [2020-10-26 20:34:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-26 20:34:53,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:34:53,858 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:34:53,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:34:53,858 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:34:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:34:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 729269141, now seen corresponding path program 1 times [2020-10-26 20:34:53,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:34:53,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542974136] [2020-10-26 20:34:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:34:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3403 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:34:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,499 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:34:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:34:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:34:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:34:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:34:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:34:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:34:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:34:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:34:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:34:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 20:34:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:34:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:57,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 20:34:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:34:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:34:57,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:34:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:34:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-26 20:34:57,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542974136] [2020-10-26 20:34:57,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:34:57,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:34:57,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893481567] [2020-10-26 20:34:57,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:34:57,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:34:57,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:34:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:34:57,692 INFO L87 Difference]: Start difference. First operand 2984 states and 3452 transitions. Second operand 7 states. [2020-10-26 20:34:57,940 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:34:59,909 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:35:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:00,390 INFO L93 Difference]: Finished difference Result 6462 states and 7492 transitions. [2020-10-26 20:35:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:35:00,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-26 20:35:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:00,415 INFO L225 Difference]: With dead ends: 6462 [2020-10-26 20:35:00,415 INFO L226 Difference]: Without dead ends: 3544 [2020-10-26 20:35:00,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:35:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2020-10-26 20:35:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3540. [2020-10-26 20:35:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-10-26 20:35:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4054 transitions. [2020-10-26 20:35:00,524 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4054 transitions. Word has length 172 [2020-10-26 20:35:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:00,524 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 4054 transitions. [2020-10-26 20:35:00,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4054 transitions. [2020-10-26 20:35:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-26 20:35:00,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:00,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:00,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:35:00,535 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1627390909, now seen corresponding path program 1 times [2020-10-26 20:35:00,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:00,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796900588] [2020-10-26 20:35:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 20:35:04,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:35:04,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3444 [2020-10-26 20:35:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:35:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:35:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 20:35:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:04,238 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:35:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:04,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:35:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 20:35:04,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:35:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:35:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:35:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:35:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:35:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 20:35:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:04,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:04,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 80 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:35:04,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796900588] [2020-10-26 20:35:04,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:04,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:35:04,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544022970] [2020-10-26 20:35:04,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:04,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:04,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:04,725 INFO L87 Difference]: Start difference. First operand 3540 states and 4054 transitions. Second operand 8 states. [2020-10-26 20:35:04,981 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:35:06,140 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:35:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:07,612 INFO L93 Difference]: Finished difference Result 6484 states and 7400 transitions. [2020-10-26 20:35:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:35:07,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-10-26 20:35:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:07,634 INFO L225 Difference]: With dead ends: 6484 [2020-10-26 20:35:07,634 INFO L226 Difference]: Without dead ends: 4090 [2020-10-26 20:35:07,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:35:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2020-10-26 20:35:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4088. [2020-10-26 20:35:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4088 states. [2020-10-26 20:35:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 4662 transitions. [2020-10-26 20:35:07,766 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 4662 transitions. Word has length 186 [2020-10-26 20:35:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:07,767 INFO L481 AbstractCegarLoop]: Abstraction has 4088 states and 4662 transitions. [2020-10-26 20:35:07,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 4662 transitions. [2020-10-26 20:35:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 20:35:07,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:07,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:35:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:35:07,779 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1860819487, now seen corresponding path program 1 times [2020-10-26 20:35:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:07,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114145987] [2020-10-26 20:35:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-26 20:35:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:35:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4352 [2020-10-26 20:35:12,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:35:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,373 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:35:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:35:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:35:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:12,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 20:35:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-26 20:35:12,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114145987] [2020-10-26 20:35:12,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:12,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:12,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041713390] [2020-10-26 20:35:12,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:12,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:12,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:12,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:12,610 INFO L87 Difference]: Start difference. First operand 4088 states and 4662 transitions. Second operand 7 states. [2020-10-26 20:35:12,970 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:15,381 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:35:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:15,416 INFO L93 Difference]: Finished difference Result 7995 states and 9131 transitions. [2020-10-26 20:35:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:35:15,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-26 20:35:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:15,439 INFO L225 Difference]: With dead ends: 7995 [2020-10-26 20:35:15,439 INFO L226 Difference]: Without dead ends: 4098 [2020-10-26 20:35:15,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:35:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-10-26 20:35:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3945. [2020-10-26 20:35:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3945 states. [2020-10-26 20:35:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 4381 transitions. [2020-10-26 20:35:15,594 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 4381 transitions. Word has length 194 [2020-10-26 20:35:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:15,595 INFO L481 AbstractCegarLoop]: Abstraction has 3945 states and 4381 transitions. [2020-10-26 20:35:15,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 4381 transitions. [2020-10-26 20:35:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 20:35:15,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:15,608 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:35:15,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:35:15,608 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2141184504, now seen corresponding path program 1 times [2020-10-26 20:35:15,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:15,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38757228] [2020-10-26 20:35:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:20,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:35:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:20,921 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:35:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:35:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:35:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 20:35:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:35:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:35:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:35:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 20:35:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:21,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 129 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:35:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38757228] [2020-10-26 20:35:21,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:21,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:35:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456195461] [2020-10-26 20:35:21,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:35:21,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:21,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:35:21,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:21,262 INFO L87 Difference]: Start difference. First operand 3945 states and 4381 transitions. Second operand 8 states. [2020-10-26 20:35:21,626 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:35:23,866 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:35:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:23,888 INFO L93 Difference]: Finished difference Result 8112 states and 9024 transitions. [2020-10-26 20:35:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:35:23,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2020-10-26 20:35:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:23,922 INFO L225 Difference]: With dead ends: 8112 [2020-10-26 20:35:23,922 INFO L226 Difference]: Without dead ends: 4640 [2020-10-26 20:35:23,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:35:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4640 states. [2020-10-26 20:35:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4640 to 4636. [2020-10-26 20:35:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-10-26 20:35:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 5123 transitions. [2020-10-26 20:35:24,044 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 5123 transitions. Word has length 221 [2020-10-26 20:35:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:24,045 INFO L481 AbstractCegarLoop]: Abstraction has 4636 states and 5123 transitions. [2020-10-26 20:35:24,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:35:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 5123 transitions. [2020-10-26 20:35:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-26 20:35:24,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:24,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 20:35:24,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:35:24,059 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2117322224, now seen corresponding path program 1 times [2020-10-26 20:35:24,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:24,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420117945] [2020-10-26 20:35:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2327 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:35:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,652 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:35:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:35:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:35:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:26,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:35:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 20:35:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 160 proven. 18 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 20:35:26,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420117945] [2020-10-26 20:35:26,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:26,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:26,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570424166] [2020-10-26 20:35:26,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:26,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:26,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:26,964 INFO L87 Difference]: Start difference. First operand 4636 states and 5123 transitions. Second operand 7 states. [2020-10-26 20:35:27,725 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:35:27,940 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:35:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:29,769 INFO L93 Difference]: Finished difference Result 10043 states and 11203 transitions. [2020-10-26 20:35:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:35:29,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-26 20:35:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:29,787 INFO L225 Difference]: With dead ends: 10043 [2020-10-26 20:35:29,788 INFO L226 Difference]: Without dead ends: 5610 [2020-10-26 20:35:29,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2020-10-26 20:35:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 5313. [2020-10-26 20:35:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5313 states. [2020-10-26 20:35:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 5828 transitions. [2020-10-26 20:35:29,928 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 5828 transitions. Word has length 237 [2020-10-26 20:35:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:29,929 INFO L481 AbstractCegarLoop]: Abstraction has 5313 states and 5828 transitions. [2020-10-26 20:35:29,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 5828 transitions. [2020-10-26 20:35:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-26 20:35:29,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:29,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 20:35:29,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:35:29,944 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -176562180, now seen corresponding path program 1 times [2020-10-26 20:35:29,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:29,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717039671] [2020-10-26 20:35:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-26 20:35:31,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:35:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-26 20:35:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 20:35:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 20:35:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,712 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:31,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:35:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 20:35:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:35:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:35:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 20:35:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:35:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-26 20:35:31,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717039671] [2020-10-26 20:35:31,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:31,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:31,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077945908] [2020-10-26 20:35:32,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:32,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:32,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:32,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:32,001 INFO L87 Difference]: Start difference. First operand 5313 states and 5828 transitions. Second operand 7 states. [2020-10-26 20:35:32,252 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:35:33,221 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:35:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:34,709 INFO L93 Difference]: Finished difference Result 8813 states and 9628 transitions. [2020-10-26 20:35:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:35:34,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-26 20:35:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:34,728 INFO L225 Difference]: With dead ends: 8813 [2020-10-26 20:35:34,728 INFO L226 Difference]: Without dead ends: 5458 [2020-10-26 20:35:34,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:35:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2020-10-26 20:35:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 4767. [2020-10-26 20:35:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4767 states. [2020-10-26 20:35:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 5187 transitions. [2020-10-26 20:35:34,863 INFO L78 Accepts]: Start accepts. Automaton has 4767 states and 5187 transitions. Word has length 243 [2020-10-26 20:35:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:34,863 INFO L481 AbstractCegarLoop]: Abstraction has 4767 states and 5187 transitions. [2020-10-26 20:35:34,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states and 5187 transitions. [2020-10-26 20:35:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-26 20:35:34,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:34,876 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:35:34,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:35:34,877 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:34,877 INFO L82 PathProgramCache]: Analyzing trace with hash -125858304, now seen corresponding path program 1 times [2020-10-26 20:35:34,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:34,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904434875] [2020-10-26 20:35:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 20:35:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,475 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:35:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:35:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:35:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 20:35:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 20:35:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:35:36,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:35:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:35:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-26 20:35:36,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904434875] [2020-10-26 20:35:36,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:36,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:35:36,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281259385] [2020-10-26 20:35:36,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:35:36,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:36,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:35:36,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:36,785 INFO L87 Difference]: Start difference. First operand 4767 states and 5187 transitions. Second operand 7 states. [2020-10-26 20:35:37,382 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:39,632 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:39,692 INFO L93 Difference]: Finished difference Result 9895 states and 10781 transitions. [2020-10-26 20:35:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:35:39,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-26 20:35:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:39,708 INFO L225 Difference]: With dead ends: 9895 [2020-10-26 20:35:39,708 INFO L226 Difference]: Without dead ends: 5466 [2020-10-26 20:35:39,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:35:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2020-10-26 20:35:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 5460. [2020-10-26 20:35:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5460 states. [2020-10-26 20:35:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 5872 transitions. [2020-10-26 20:35:39,839 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 5872 transitions. Word has length 249 [2020-10-26 20:35:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:39,839 INFO L481 AbstractCegarLoop]: Abstraction has 5460 states and 5872 transitions. [2020-10-26 20:35:39,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:35:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 5872 transitions. [2020-10-26 20:35:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 20:35:39,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:39,856 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:35:39,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 20:35:39,856 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash -950132812, now seen corresponding path program 1 times [2020-10-26 20:35:39,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:39,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938711236] [2020-10-26 20:35:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 20:35:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 20:35:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,009 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:41,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:41,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:35:41,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:35:41,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:35:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:41,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:35:41,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:41,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:41,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:35:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:35:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:41,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:41,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:35:41,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:35:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:35:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-26 20:35:41,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938711236] [2020-10-26 20:35:41,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:41,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:41,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409883543] [2020-10-26 20:35:41,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:35:41,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:41,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:35:41,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:35:41,373 INFO L87 Difference]: Start difference. First operand 5460 states and 5872 transitions. Second operand 6 states. [2020-10-26 20:35:42,833 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:35:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:43,338 INFO L93 Difference]: Finished difference Result 5548 states and 5960 transitions. [2020-10-26 20:35:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:35:43,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 271 [2020-10-26 20:35:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:43,353 INFO L225 Difference]: With dead ends: 5548 [2020-10-26 20:35:43,354 INFO L226 Difference]: Without dead ends: 5323 [2020-10-26 20:35:43,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:35:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-26 20:35:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5319. [2020-10-26 20:35:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5319 states. [2020-10-26 20:35:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 5723 transitions. [2020-10-26 20:35:43,463 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 5723 transitions. Word has length 271 [2020-10-26 20:35:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:43,464 INFO L481 AbstractCegarLoop]: Abstraction has 5319 states and 5723 transitions. [2020-10-26 20:35:43,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:35:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 5723 transitions. [2020-10-26 20:35:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-26 20:35:43,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:35:43,479 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:35:43,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 20:35:43,479 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:35:43,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:35:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1339446258, now seen corresponding path program 1 times [2020-10-26 20:35:43,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:35:43,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182879652] [2020-10-26 20:35:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:35:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:45,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 20:35:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:45,994 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:35:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:35:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:35:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:35:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:35:46,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:35:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:35:46,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:35:46,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:35:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:35:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:35:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:35:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:35:46,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:35:46,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:35:46,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:35:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:35:46,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:35:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:35:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:35:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:35:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:35:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 214 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 20:35:46,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182879652] [2020-10-26 20:35:46,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:35:46,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:35:46,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992613604] [2020-10-26 20:35:46,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:35:46,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:35:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:35:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:35:46,273 INFO L87 Difference]: Start difference. First operand 5319 states and 5723 transitions. Second operand 6 states. [2020-10-26 20:35:47,257 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:35:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:35:48,250 INFO L93 Difference]: Finished difference Result 10716 states and 11552 transitions. [2020-10-26 20:35:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:35:48,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 281 [2020-10-26 20:35:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:35:48,252 INFO L225 Difference]: With dead ends: 10716 [2020-10-26 20:35:48,252 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 20:35:48,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:35:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 20:35:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 20:35:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 20:35:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 20:35:48,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 281 [2020-10-26 20:35:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:35:48,269 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 20:35:48,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:35:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 20:35:48,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 20:35:48,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 20:35:48,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 20:35:49,507 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 219 [2020-10-26 20:35:49,722 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 211 [2020-10-26 20:35:50,331 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 45 [2020-10-26 20:35:54,139 WARN L193 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 243 DAG size of output: 87 [2020-10-26 20:35:56,214 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 212 DAG size of output: 69 [2020-10-26 20:35:56,402 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:35:58,409 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 204 DAG size of output: 69 [2020-10-26 20:35:59,296 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 63 [2020-10-26 20:35:59,302 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-26 20:35:59,302 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-26 20:35:59,302 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-26 20:35:59,303 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-26 20:35:59,303 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:35:59,303 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-26 20:35:59,303 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-26 20:35:59,304 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,305 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-26 20:35:59,306 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,307 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-26 20:35:59,308 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,309 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-26 20:35:59,310 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-26 20:35:59,311 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,312 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-26 20:35:59,313 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,314 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-26 20:35:59,315 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-26 20:35:59,316 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L270 CegarLoopResult]: At program point L487(line 487) the Hoare annotation is: (let ((.cse4 (not (<= |old(~a16~0)| 4))) (.cse2 (not (<= |old(~a17~0)| 0))) (.cse8 (not (<= |old(~a16~0)| 5))) (.cse9 (not (= 0 |old(~a20~0)|))) (.cse6 (not (= |old(~a8~0)| 13))) (.cse0 (not (= |old(~a7~0)| 1))) (.cse10 (not (= 6 |old(~a16~0)|))) (.cse7 (not (= |old(~a17~0)| 1))) (.cse1 (not (= |old(~a20~0)| 1))) (.cse3 (not (= |old(~a21~0)| 1))) (.cse5 (not (= |old(~a7~0)| 0)))) (and (or (not (= 14 |old(~a8~0)|)) .cse0 .cse1 .cse2 (not (= 5 |old(~a16~0)|)) .cse3 (not (= ~a12~0 8))) (or .cse1 .cse4 .cse2 .cse3 .cse5) (or (not (<= 15 |old(~a8~0)|)) (not (<= 1 |old(~a20~0)|)) .cse3 .cse5 (not (<= |old(~a20~0)| 1))) (or .cse6 .cse0 .cse4 .cse2) (or .cse6 .cse7 .cse0 .cse1) (or .cse7 .cse0 .cse1 .cse3) (or .cse8 .cse0 .cse9 .cse3) (or .cse10 .cse9 .cse3 .cse5) (or .cse6 .cse7 .cse0 .cse9) (or .cse8 .cse9 .cse3 .cse5) (or .cse6 .cse0 .cse10) (or .cse7 .cse1 .cse3 .cse5))) [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L487-1(line 487) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,317 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L270 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse10 (= ~a7~0 |old(~a7~0)|)) (.cse11 (= ~a17~0 |old(~a17~0)|)) (.cse12 (= ~a21~0 1)) (.cse13 (= ~a20~0 |old(~a20~0)|)) (.cse18 (= ~a16~0 |old(~a16~0)|)) (.cse19 (= ~a8~0 |old(~a8~0)|))) (let ((.cse6 (not (= 6 |old(~a16~0)|))) (.cse17 (not (<= |old(~a16~0)| 4))) (.cse14 (not (<= |old(~a17~0)| 0))) (.cse16 (not (<= |old(~a16~0)| 5))) (.cse4 (not (= 0 |old(~a20~0)|))) (.cse15 (and .cse10 .cse11 .cse12 .cse13 .cse18 .cse19)) (.cse0 (not (= |old(~a8~0)| 13))) (.cse2 (and .cse10 .cse11 (= ~a21~0 |old(~a21~0)|) .cse13 .cse18 (= ~a8~0 13))) (.cse3 (not (= |old(~a7~0)| 1))) (.cse1 (not (= |old(~a17~0)| 1))) (.cse5 (and .cse11 .cse12 .cse13 .cse18 .cse19 (= ~a7~0 0))) (.cse9 (not (= |old(~a20~0)| 1))) (.cse7 (not (= |old(~a21~0)| 1))) (.cse8 (not (= |old(~a7~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse4 .cse7 .cse8) (or (not (= 14 |old(~a8~0)|)) .cse3 .cse9 (and .cse10 .cse11 .cse12 .cse13 (= 14 ~a8~0) (= 5 ~a16~0)) .cse14 (not (= 5 |old(~a16~0)|)) .cse7 (not (= ~a12~0 8))) (or .cse0 .cse2 .cse3 .cse6) (or .cse1 .cse3 .cse9 .cse15 .cse7) (or .cse5 .cse16 .cse4 .cse7 .cse8) (or .cse5 (not (<= 15 |old(~a8~0)|)) (not (<= 1 |old(~a20~0)|)) .cse7 .cse8 (not (<= |old(~a20~0)| 1))) (or .cse0 .cse2 .cse3 .cse17 .cse14) (or .cse5 .cse9 .cse17 .cse14 .cse7 .cse8) (or .cse16 .cse3 .cse4 .cse15 .cse7) (or .cse0 .cse1 .cse2 .cse3 .cse9) (or .cse1 .cse5 .cse9 .cse7 .cse8)))) [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-26 20:35:59,318 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-26 20:35:59,319 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-26 20:35:59,320 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-26 20:35:59,321 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-26 20:35:59,322 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:35:59,323 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 1 ~a20~0) (= ~a12~0 8) (<= ~a21~0 1) (<= ~a20~0 1) (<= 1 ~a21~0) (= 5 ~a16~0) (<= ~a8~0 15) (= ~a7~0 0) (<= 15 ~a8~0) (= ~a17~0 1)) [2020-10-26 20:35:59,323 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-26 20:35:59,323 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:35:59,323 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| 1)) (not (<= |old(~a8~0)| 15)) (not (<= 15 |old(~a8~0)|)) (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 1) (= ~a20~0 |old(~a20~0)|) (= 5 ~a16~0) (<= ~a8~0 15) (<= 15 ~a8~0) (= ~a7~0 0)) (not (= 5 |old(~a16~0)|)) (not (= |old(~a21~0)| 1)) (not (<= 1 |old(~a20~0)|)) (not (= ~a12~0 8)) (not (<= |old(~a20~0)| 1)) (not (= |old(~a7~0)| 0))) [2020-10-26 20:35:59,323 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:35:59,323 INFO L270 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse10 (<= ~a16~0 4)) (.cse8 (<= ~a17~0 0)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1)) (.cse3 (= ~a7~0 0)) (.cse5 (= ~a7~0 1)) (.cse6 (= ~a8~0 13)) (.cse9 (= ~a20~0 1)) (.cse7 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= |old(~a8~0)| 15)) (not (<= |old(~a21~0)| 1)) (and .cse0 .cse1 .cse4 .cse3) (and .cse0 .cse5 .cse6 .cse7) (and .cse1 .cse5 (= 14 ~a8~0) .cse8 .cse9 (= 5 ~a16~0)) (and .cse1 .cse9 .cse3 (<= 15 ~a8~0)) (and .cse1 .cse10 .cse8 .cse9 .cse3) (not (<= 1 |old(~a20~0)|)) (and .cse5 .cse10 .cse8 .cse6) (not (<= |old(~a20~0)| 1)) (and .cse5 .cse2 .cse6) (and .cse1 .cse5 .cse9 .cse7) (not (= |old(~a17~0)| 1)) (and .cse0 .cse1 .cse5 .cse4) (and .cse1 .cse9 .cse3 .cse7) (not (<= 1 |old(~a21~0)|)) (not (<= 15 |old(~a8~0)|)) (not (= 5 |old(~a16~0)|)) (and .cse5 .cse6 .cse9 .cse7) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)))) [2020-10-26 20:35:59,323 INFO L274 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-10-26 20:35:59,323 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-26 20:35:59,324 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse10 (<= ~a16~0 4)) (.cse8 (<= ~a17~0 0)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1)) (.cse3 (= ~a7~0 0)) (.cse5 (= ~a7~0 1)) (.cse6 (= ~a8~0 13)) (.cse9 (= ~a20~0 1)) (.cse7 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= |old(~a8~0)| 15)) (not (<= |old(~a21~0)| 1)) (and .cse0 .cse1 .cse4 .cse3) (and .cse0 .cse5 .cse6 .cse7) (and .cse1 .cse5 (= 14 ~a8~0) .cse8 .cse9 (= 5 ~a16~0)) (and .cse1 .cse9 .cse3 (<= 15 ~a8~0)) (and .cse1 .cse10 .cse8 .cse9 .cse3) (not (<= 1 |old(~a20~0)|)) (and .cse5 .cse10 .cse8 .cse6) (not (<= |old(~a20~0)| 1)) (and .cse5 .cse2 .cse6) (and .cse1 .cse5 .cse9 .cse7) (not (= |old(~a17~0)| 1)) (and .cse0 .cse1 .cse5 .cse4) (and .cse1 .cse9 .cse3 .cse7) (not (<= 1 |old(~a21~0)|)) (not (<= 15 |old(~a8~0)|)) (not (= 5 |old(~a16~0)|)) (and .cse5 .cse6 .cse9 .cse7) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)))) [2020-10-26 20:35:59,324 INFO L274 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:35:59,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:35:59 BoogieIcfgContainer [2020-10-26 20:35:59,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:35:59,358 INFO L168 Benchmark]: Toolchain (without parser) took 148042.45 ms. Allocated memory was 155.2 MB in the beginning and 1.1 GB in the end (delta: 929.0 MB). Free memory was 129.5 MB in the beginning and 612.0 MB in the end (delta: -482.5 MB). Peak memory consumption was 649.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:35:59,358 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:35:59,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.66 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 132.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 8.0 GB. [2020-10-26 20:35:59,359 INFO L168 Benchmark]: Boogie Preprocessor took 134.85 ms. Allocated memory is still 155.2 MB. Free memory was 132.8 MB in the beginning and 128.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:35:59,360 INFO L168 Benchmark]: RCFGBuilder took 2041.75 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 106.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 8.0 GB. [2020-10-26 20:35:59,360 INFO L168 Benchmark]: TraceAbstraction took 145024.49 ms. Allocated memory was 155.2 MB in the beginning and 1.1 GB in the end (delta: 929.0 MB). Free memory was 106.2 MB in the beginning and 612.0 MB in the end (delta: -505.8 MB). Peak memory consumption was 625.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:35:59,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 826.66 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 132.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.85 ms. Allocated memory is still 155.2 MB. Free memory was 132.8 MB in the beginning and 128.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2041.75 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 106.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 145024.49 ms. Allocated memory was 155.2 MB in the beginning and 1.1 GB in the end (delta: 929.0 MB). Free memory was 106.2 MB in the beginning and 612.0 MB in the end (delta: -505.8 MB). Peak memory consumption was 625.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((a20 == 0 && a21 == 1) && a16 == 6) && a7 == 0) || !(\old(a8) <= 15)) || !(\old(a21) <= 1)) || (((a20 == 0 && a21 == 1) && a16 <= 5) && a7 == 0)) || (((a20 == 0 && a7 == 1) && a8 == 13) && a17 == 1)) || (((((a21 == 1 && a7 == 1) && 14 == a8) && a17 <= 0) && a20 == 1) && 5 == a16)) || (((a21 == 1 && a20 == 1) && a7 == 0) && 15 <= a8)) || ((((a21 == 1 && a16 <= 4) && a17 <= 0) && a20 == 1) && a7 == 0)) || !(1 <= \old(a20))) || (((a7 == 1 && a16 <= 4) && a17 <= 0) && a8 == 13)) || !(\old(a20) <= 1)) || ((a7 == 1 && a16 == 6) && a8 == 13)) || (((a21 == 1 && a7 == 1) && a20 == 1) && a17 == 1)) || !(\old(a17) == 1)) || (((a20 == 0 && a21 == 1) && a7 == 1) && a16 <= 5)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || !(1 <= \old(a21))) || !(15 <= \old(a8))) || !(5 == \old(a16))) || (((a7 == 1 && a8 == 13) && a20 == 1) && a17 == 1)) || !(\old(a7) == 0)) || !(a12 == 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 133.8s, OverallIterations: 19, TraceHistogramMax: 6, AutomataDifference: 58.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 492 SDtfs, 8460 SDslu, 661 SDs, 0 SdLazy, 15212 SolverSat, 2078 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 203 SyntacticMatches, 6 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5460occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 1398 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 671 PreInvPairs, 753 NumberOfFragments, 1256 HoareAnnotationTreeSize, 671 FomulaSimplifications, 5469 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 9 FomulaSimplificationsInter, 11323 FormulaSimplificationTreeSizeReductionInter, 9.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 70.7s InterpolantComputationTime, 3441 NumberOfCodeBlocks, 3441 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3422 ConstructedInterpolants, 0 QuantifiedInterpolants, 2863938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 2185/2504 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...