/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=DEEPEST --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/Problem15_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:30:45,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:30:45,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:30:45,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:30:45,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:30:45,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:30:45,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:30:45,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:30:45,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:30:45,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:30:45,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:30:45,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:30:45,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:30:45,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:30:45,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:30:45,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:30:45,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:30:45,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:30:45,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:30:45,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:30:45,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:30:45,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:30:45,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:30:45,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:30:45,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:30:45,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:30:45,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:30:45,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:30:45,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:30:45,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:30:45,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:30:45,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:30:45,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:30:45,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:30:45,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:30:45,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:30:45,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:30:45,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:30:45,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:30:45,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:30:45,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:30:45,585 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 [2020-10-27 18:30:45,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:30:45,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:30:45,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:30:45,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:30:45,646 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:30:45,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:30:45,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:30:45,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:30:45,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:30:45,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:30:45,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:30:45,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:30:45,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:30:45,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:30:45,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:30:45,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:30:45,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:30:45,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:30:45,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:30:45,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:30:45,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:30:45,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:30:45,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:30:45,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:30:45,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:30:45,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:30:45,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:30:45,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:30:45,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:30:45,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:30:46,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:30:46,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:30:46,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:30:46,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:30:46,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:30:46,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-27 18:30:46,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40daf8a36/4b91edee6ba4416497b5993d0de5db3f/FLAGcbf77afe9 [2020-10-27 18:30:47,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:30:47,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-27 18:30:47,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40daf8a36/4b91edee6ba4416497b5993d0de5db3f/FLAGcbf77afe9 [2020-10-27 18:30:47,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40daf8a36/4b91edee6ba4416497b5993d0de5db3f [2020-10-27 18:30:47,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:30:47,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:30:47,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:30:47,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:30:47,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:30:47,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:47" (1/1) ... [2020-10-27 18:30:47,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606cba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:47, skipping insertion in model container [2020-10-27 18:30:47,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:47" (1/1) ... [2020-10-27 18:30:47,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:30:47,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:30:48,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:30:48,426 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:30:48,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:30:48,854 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:30:48,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48 WrapperNode [2020-10-27 18:30:48,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:30:48,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:30:48,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:30:48,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:30:48,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:48,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:48,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:48,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:49,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:49,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:49,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (1/1) ... [2020-10-27 18:30:49,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:30:49,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:30:49,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:30:49,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:30:49,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (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 [2020-10-27 18:30:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:30:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:30:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:30:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:30:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:30:49,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:30:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:30:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:30:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:30:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:30:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:30:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:30:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:30:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:30:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:30:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:30:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:30:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:30:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:30:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:30:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:30:52,657 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:30:52,657 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:30:52,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:52 BoogieIcfgContainer [2020-10-27 18:30:52,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:30:52,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:30:52,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:30:52,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:30:52,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:30:47" (1/3) ... [2020-10-27 18:30:52,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679b1e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:52, skipping insertion in model container [2020-10-27 18:30:52,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:48" (2/3) ... [2020-10-27 18:30:52,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679b1e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:52, skipping insertion in model container [2020-10-27 18:30:52,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:52" (3/3) ... [2020-10-27 18:30:52,670 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label48.c [2020-10-27 18:30:52,685 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:30:52,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:30:52,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:30:52,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:30:52,741 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:30:52,741 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:30:52,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:30:52,741 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:30:52,741 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:30:52,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:30:52,742 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:30:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:30:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 18:30:52,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:52,782 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] [2020-10-27 18:30:52,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1195536441, now seen corresponding path program 1 times [2020-10-27 18:30:52,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:52,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110698271] [2020-10-27 18:30:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:53,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:53,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 18:30:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-27 18:30:53,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:30:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:30:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:30:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:30:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:53,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:30:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:30:53,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:30:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:30:53,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110698271] [2020-10-27 18:30:53,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:30:53,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:30:53,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36553535] [2020-10-27 18:30:53,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:30:54,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:54,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:30:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:30:54,024 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-27 18:31:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:03,030 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-27 18:31:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:31:03,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 18:31:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:03,057 INFO L225 Difference]: With dead ends: 1522 [2020-10-27 18:31:03,058 INFO L226 Difference]: Without dead ends: 1011 [2020-10-27 18:31:03,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:31:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-27 18:31:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-27 18:31:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-27 18:31:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1379 transitions. [2020-10-27 18:31:03,259 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1379 transitions. Word has length 34 [2020-10-27 18:31:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:03,259 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1379 transitions. [2020-10-27 18:31:03,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1379 transitions. [2020-10-27 18:31:03,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 18:31:03,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:03,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:31:03,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:31:03,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 203329422, now seen corresponding path program 1 times [2020-10-27 18:31:03,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:03,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842971422] [2020-10-27 18:31:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:04,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 18:31:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:31:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-27 18:31:04,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:31:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 18:31:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:31:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:05,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:05,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:31:05,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:31:05,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:31:05,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:31:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:31:05,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842971422] [2020-10-27 18:31:05,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:05,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:31:05,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743780257] [2020-10-27 18:31:05,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:31:05,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:31:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:31:05,331 INFO L87 Difference]: Start difference. First operand 1001 states and 1379 transitions. Second operand 6 states. [2020-10-27 18:31:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:16,867 INFO L93 Difference]: Finished difference Result 3874 states and 5381 transitions. [2020-10-27 18:31:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:31:16,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 18:31:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:16,886 INFO L225 Difference]: With dead ends: 3874 [2020-10-27 18:31:16,887 INFO L226 Difference]: Without dead ends: 2879 [2020-10-27 18:31:16,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:31:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-10-27 18:31:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2873. [2020-10-27 18:31:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-10-27 18:31:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3648 transitions. [2020-10-27 18:31:16,995 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3648 transitions. Word has length 103 [2020-10-27 18:31:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:16,996 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 3648 transitions. [2020-10-27 18:31:16,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:31:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3648 transitions. [2020-10-27 18:31:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 18:31:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:17,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:31:17,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:31:17,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 204314901, now seen corresponding path program 1 times [2020-10-27 18:31:17,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:17,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723364459] [2020-10-27 18:31:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:31:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:31:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 18:31:22,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:31:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:31:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:22,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:31:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:22,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:31:22,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:31:22,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:31:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:31:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:31:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:31:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:31:22,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723364459] [2020-10-27 18:31:22,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:22,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:22,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609448642] [2020-10-27 18:31:22,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:22,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:22,736 INFO L87 Difference]: Start difference. First operand 2873 states and 3648 transitions. Second operand 5 states. [2020-10-27 18:31:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:33,694 INFO L93 Difference]: Finished difference Result 7011 states and 9237 transitions. [2020-10-27 18:31:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:33,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-27 18:31:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:33,734 INFO L225 Difference]: With dead ends: 7011 [2020-10-27 18:31:33,734 INFO L226 Difference]: Without dead ends: 4451 [2020-10-27 18:31:33,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:31:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2020-10-27 18:31:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4444. [2020-10-27 18:31:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-27 18:31:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5595 transitions. [2020-10-27 18:31:33,879 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5595 transitions. Word has length 252 [2020-10-27 18:31:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:33,880 INFO L481 AbstractCegarLoop]: Abstraction has 4444 states and 5595 transitions. [2020-10-27 18:31:33,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5595 transitions. [2020-10-27 18:31:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-27 18:31:33,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:33,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:31:33,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:31:33,888 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:33,888 INFO L82 PathProgramCache]: Analyzing trace with hash -732172956, now seen corresponding path program 1 times [2020-10-27 18:31:33,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:33,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754241747] [2020-10-27 18:31:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-27 18:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 18:31:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:39,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:39,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:31:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:39,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:31:39,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:31:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:31:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:39,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 18:31:39,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 18:31:39,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 18:31:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:31:39,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754241747] [2020-10-27 18:31:39,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:39,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:39,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798660090] [2020-10-27 18:31:39,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:39,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:39,881 INFO L87 Difference]: Start difference. First operand 4444 states and 5595 transitions. Second operand 5 states. [2020-10-27 18:31:41,661 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:31:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:48,338 INFO L93 Difference]: Finished difference Result 7669 states and 9830 transitions. [2020-10-27 18:31:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:48,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-27 18:31:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:48,364 INFO L225 Difference]: With dead ends: 7669 [2020-10-27 18:31:48,364 INFO L226 Difference]: Without dead ends: 4444 [2020-10-27 18:31:48,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:31:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-10-27 18:31:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4444. [2020-10-27 18:31:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-27 18:31:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5589 transitions. [2020-10-27 18:31:48,500 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5589 transitions. Word has length 272 [2020-10-27 18:31:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:48,501 INFO L481 AbstractCegarLoop]: Abstraction has 4444 states and 5589 transitions. [2020-10-27 18:31:48,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5589 transitions. [2020-10-27 18:31:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 18:31:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:48,509 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:31:48,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:31:48,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1958864795, now seen corresponding path program 1 times [2020-10-27 18:31:48,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:48,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134115169] [2020-10-27 18:31:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:53,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:53,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:31:53,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:31:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 18:31:53,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 268 [2020-10-27 18:31:53,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 18:31:53,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:53,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:53,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:53,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:31:53,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:53,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:31:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:31:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:31:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-27 18:31:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:31:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:31:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:31:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-27 18:31:54,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134115169] [2020-10-27 18:31:54,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:54,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:54,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808800564] [2020-10-27 18:31:54,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:54,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:54,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:54,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:54,333 INFO L87 Difference]: Start difference. First operand 4444 states and 5589 transitions. Second operand 5 states. [2020-10-27 18:31:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:59,995 INFO L93 Difference]: Finished difference Result 7662 states and 9809 transitions. [2020-10-27 18:31:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:59,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-27 18:31:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:00,020 INFO L225 Difference]: With dead ends: 7662 [2020-10-27 18:32:00,021 INFO L226 Difference]: Without dead ends: 4444 [2020-10-27 18:32:00,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-10-27 18:32:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4444. [2020-10-27 18:32:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-27 18:32:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5585 transitions. [2020-10-27 18:32:00,161 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5585 transitions. Word has length 288 [2020-10-27 18:32:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:00,162 INFO L481 AbstractCegarLoop]: Abstraction has 4444 states and 5585 transitions. [2020-10-27 18:32:00,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:32:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5585 transitions. [2020-10-27 18:32:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 18:32:00,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:00,170 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:32:00,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:32:00,170 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:00,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1208757837, now seen corresponding path program 1 times [2020-10-27 18:32:00,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:00,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18685980] [2020-10-27 18:32:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 18:32:05,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:32:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:32:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:32:05,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:32:05,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:32:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:05,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:05,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:32:05,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 18:32:05,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:32:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:05,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-27 18:32:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:06,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:32:06,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 18:32:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:32:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 18:32:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 18:32:06,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18685980] [2020-10-27 18:32:06,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:06,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:32:06,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208041158] [2020-10-27 18:32:06,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:32:06,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:32:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:32:06,197 INFO L87 Difference]: Start difference. First operand 4444 states and 5585 transitions. Second operand 7 states. [2020-10-27 18:32:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:17,322 INFO L93 Difference]: Finished difference Result 9931 states and 13029 transitions. [2020-10-27 18:32:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:32:17,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-27 18:32:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:17,361 INFO L225 Difference]: With dead ends: 9931 [2020-10-27 18:32:17,361 INFO L226 Difference]: Without dead ends: 5800 [2020-10-27 18:32:17,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:32:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2020-10-27 18:32:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5751. [2020-10-27 18:32:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2020-10-27 18:32:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 7154 transitions. [2020-10-27 18:32:17,569 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 7154 transitions. Word has length 298 [2020-10-27 18:32:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:17,571 INFO L481 AbstractCegarLoop]: Abstraction has 5751 states and 7154 transitions. [2020-10-27 18:32:17,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:32:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 7154 transitions. [2020-10-27 18:32:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 18:32:17,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:17,580 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:32:17,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:32:17,580 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:17,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1974762538, now seen corresponding path program 1 times [2020-10-27 18:32:17,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:17,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067997704] [2020-10-27 18:32:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:22,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:22,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 18:32:22,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:32:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 18:32:22,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 18:32:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 18:32:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:22,858 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:32:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:32:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:22,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:32:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:32:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:32:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:23,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:23,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:32:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-27 18:32:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:23,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:23,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 18:32:23,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 18:32:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:32:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 18:32:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 18:32:23,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067997704] [2020-10-27 18:32:23,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:23,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:32:23,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394292794] [2020-10-27 18:32:23,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:32:23,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:32:23,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:32:23,495 INFO L87 Difference]: Start difference. First operand 5751 states and 7154 transitions. Second operand 7 states. [2020-10-27 18:32:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:39,923 INFO L93 Difference]: Finished difference Result 12571 states and 16473 transitions. [2020-10-27 18:32:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:32:39,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-27 18:32:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:39,972 INFO L225 Difference]: With dead ends: 12571 [2020-10-27 18:32:39,972 INFO L226 Difference]: Without dead ends: 8373 [2020-10-27 18:32:39,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:32:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2020-10-27 18:32:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 8355. [2020-10-27 18:32:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8355 states. [2020-10-27 18:32:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 10225 transitions. [2020-10-27 18:32:40,202 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 10225 transitions. Word has length 308 [2020-10-27 18:32:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:40,203 INFO L481 AbstractCegarLoop]: Abstraction has 8355 states and 10225 transitions. [2020-10-27 18:32:40,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:32:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 10225 transitions. [2020-10-27 18:32:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-27 18:32:40,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:40,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:32:40,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:32:40,218 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash -120791734, now seen corresponding path program 1 times [2020-10-27 18:32:40,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:40,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205211301] [2020-10-27 18:32:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4497 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:32:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:32:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:32:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:45,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:45,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:32:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 18:32:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205211301] [2020-10-27 18:32:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:45,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:32:45,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032415781] [2020-10-27 18:32:45,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:32:45,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:32:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:32:45,292 INFO L87 Difference]: Start difference. First operand 8355 states and 10225 transitions. Second operand 5 states. [2020-10-27 18:32:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:56,994 INFO L93 Difference]: Finished difference Result 17662 states and 22564 transitions. [2020-10-27 18:32:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:32:56,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-27 18:32:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:57,029 INFO L225 Difference]: With dead ends: 17662 [2020-10-27 18:32:57,029 INFO L226 Difference]: Without dead ends: 10860 [2020-10-27 18:32:57,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2020-10-27 18:32:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 10856. [2020-10-27 18:32:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10856 states. [2020-10-27 18:32:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 13154 transitions. [2020-10-27 18:32:57,344 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 13154 transitions. Word has length 320 [2020-10-27 18:32:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:57,345 INFO L481 AbstractCegarLoop]: Abstraction has 10856 states and 13154 transitions. [2020-10-27 18:32:57,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:32:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 13154 transitions. [2020-10-27 18:32:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-27 18:32:57,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:57,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:32:57,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:32:57,357 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash -159891795, now seen corresponding path program 1 times [2020-10-27 18:32:57,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:57,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537830402] [2020-10-27 18:32:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:59,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:59,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-27 18:32:59,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:32:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-27 18:32:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-27 18:32:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 18:32:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:59,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:32:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 18:32:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:32:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:59,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 18:32:59,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:32:59,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537830402] [2020-10-27 18:32:59,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:59,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:32:59,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278864675] [2020-10-27 18:32:59,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:32:59,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:32:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:32:59,903 INFO L87 Difference]: Start difference. First operand 10856 states and 13154 transitions. Second operand 7 states. [2020-10-27 18:33:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:09,606 INFO L93 Difference]: Finished difference Result 23947 states and 29650 transitions. [2020-10-27 18:33:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:33:09,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-27 18:33:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:09,673 INFO L225 Difference]: With dead ends: 23947 [2020-10-27 18:33:09,674 INFO L226 Difference]: Without dead ends: 13404 [2020-10-27 18:33:09,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:33:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13404 states. [2020-10-27 18:33:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13404 to 13373. [2020-10-27 18:33:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13373 states. [2020-10-27 18:33:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 15812 transitions. [2020-10-27 18:33:10,019 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 15812 transitions. Word has length 330 [2020-10-27 18:33:10,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:10,020 INFO L481 AbstractCegarLoop]: Abstraction has 13373 states and 15812 transitions. [2020-10-27 18:33:10,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:33:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 15812 transitions. [2020-10-27 18:33:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-27 18:33:10,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:10,032 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:33:10,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:33:10,032 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:10,033 INFO L82 PathProgramCache]: Analyzing trace with hash 53960182, now seen corresponding path program 1 times [2020-10-27 18:33:10,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:10,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685010192] [2020-10-27 18:33:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-27 18:33:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 18:33:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:15,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:33:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:33:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:33:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:15,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:33:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 18:33:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:33:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:33:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-27 18:33:15,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685010192] [2020-10-27 18:33:15,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:15,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:33:15,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010699709] [2020-10-27 18:33:15,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:33:15,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:33:15,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:33:15,678 INFO L87 Difference]: Start difference. First operand 13373 states and 15812 transitions. Second operand 5 states. [2020-10-27 18:33:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:26,143 INFO L93 Difference]: Finished difference Result 30174 states and 36529 transitions. [2020-10-27 18:33:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:33:26,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-27 18:33:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:26,201 INFO L225 Difference]: With dead ends: 30174 [2020-10-27 18:33:26,201 INFO L226 Difference]: Without dead ends: 18665 [2020-10-27 18:33:26,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:33:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18665 states. [2020-10-27 18:33:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18665 to 18038. [2020-10-27 18:33:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18038 states. [2020-10-27 18:33:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18038 states to 18038 states and 21758 transitions. [2020-10-27 18:33:26,585 INFO L78 Accepts]: Start accepts. Automaton has 18038 states and 21758 transitions. Word has length 345 [2020-10-27 18:33:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:26,586 INFO L481 AbstractCegarLoop]: Abstraction has 18038 states and 21758 transitions. [2020-10-27 18:33:26,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:33:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 18038 states and 21758 transitions. [2020-10-27 18:33:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-27 18:33:26,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:26,601 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:26,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:33:26,601 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1498710263, now seen corresponding path program 1 times [2020-10-27 18:33:26,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:26,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619732145] [2020-10-27 18:33:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-27 18:33:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 18:33:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:31,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:33:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:32,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:32,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:33:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:33:32,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:33:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 18:33:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:32,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:33:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-27 18:33:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 18:33:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 262 proven. 78 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-27 18:33:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619732145] [2020-10-27 18:33:32,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:32,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:33:32,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77386568] [2020-10-27 18:33:32,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:33:32,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:32,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:33:32,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:33:32,522 INFO L87 Difference]: Start difference. First operand 18038 states and 21758 transitions. Second operand 7 states. [2020-10-27 18:33:33,918 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 18:33:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:44,642 INFO L93 Difference]: Finished difference Result 43137 states and 55448 transitions. [2020-10-27 18:33:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:33:44,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-27 18:33:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:44,762 INFO L225 Difference]: With dead ends: 43137 [2020-10-27 18:33:44,763 INFO L226 Difference]: Without dead ends: 26939 [2020-10-27 18:33:44,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:33:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26939 states. [2020-10-27 18:33:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26939 to 26733. [2020-10-27 18:33:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26733 states. [2020-10-27 18:33:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26733 states to 26733 states and 33295 transitions. [2020-10-27 18:33:45,556 INFO L78 Accepts]: Start accepts. Automaton has 26733 states and 33295 transitions. Word has length 376 [2020-10-27 18:33:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:45,556 INFO L481 AbstractCegarLoop]: Abstraction has 26733 states and 33295 transitions. [2020-10-27 18:33:45,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:33:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 26733 states and 33295 transitions. [2020-10-27 18:33:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-27 18:33:45,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:45,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:45,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:33:45,580 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 866949304, now seen corresponding path program 1 times [2020-10-27 18:33:45,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:45,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369512676] [2020-10-27 18:33:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:47,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:47,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-27 18:33:47,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:33:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-10-27 18:33:47,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-27 18:33:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 18:33:47,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:47,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:33:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:33:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-27 18:33:48,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369512676] [2020-10-27 18:33:48,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:48,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:33:48,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243312944] [2020-10-27 18:33:48,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:33:48,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:48,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:33:48,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:33:48,185 INFO L87 Difference]: Start difference. First operand 26733 states and 33295 transitions. Second operand 5 states. [2020-10-27 18:33:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:57,165 INFO L93 Difference]: Finished difference Result 57440 states and 72601 transitions. [2020-10-27 18:33:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:33:57,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 419 [2020-10-27 18:33:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:57,295 INFO L225 Difference]: With dead ends: 57440 [2020-10-27 18:33:57,295 INFO L226 Difference]: Without dead ends: 32619 [2020-10-27 18:33:57,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:33:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32619 states. [2020-10-27 18:33:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32619 to 32617. [2020-10-27 18:33:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32617 states. [2020-10-27 18:33:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32617 states to 32617 states and 40607 transitions. [2020-10-27 18:33:58,274 INFO L78 Accepts]: Start accepts. Automaton has 32617 states and 40607 transitions. Word has length 419 [2020-10-27 18:33:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:58,275 INFO L481 AbstractCegarLoop]: Abstraction has 32617 states and 40607 transitions. [2020-10-27 18:33:58,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:33:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 32617 states and 40607 transitions. [2020-10-27 18:33:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-27 18:33:58,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:58,307 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:58,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:33:58,308 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1770382582, now seen corresponding path program 1 times [2020-10-27 18:33:58,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:58,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844832420] [2020-10-27 18:33:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-27 18:33:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:33:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:34:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 18:34:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:34:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 18:34:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 18:34:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 78 proven. 254 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 18:34:01,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844832420] [2020-10-27 18:34:01,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:01,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:34:01,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744501265] [2020-10-27 18:34:01,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:34:01,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:34:01,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:34:01,525 INFO L87 Difference]: Start difference. First operand 32617 states and 40607 transitions. Second operand 8 states. [2020-10-27 18:34:01,693 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:34:03,989 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 18:34:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:16,158 INFO L93 Difference]: Finished difference Result 64983 states and 81176 transitions. [2020-10-27 18:34:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:34:16,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 498 [2020-10-27 18:34:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:16,276 INFO L225 Difference]: With dead ends: 64983 [2020-10-27 18:34:16,277 INFO L226 Difference]: Without dead ends: 32679 [2020-10-27 18:34:16,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:34:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32679 states. [2020-10-27 18:34:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32679 to 32677. [2020-10-27 18:34:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32677 states. [2020-10-27 18:34:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32677 states to 32677 states and 40890 transitions. [2020-10-27 18:34:17,071 INFO L78 Accepts]: Start accepts. Automaton has 32677 states and 40890 transitions. Word has length 498 [2020-10-27 18:34:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:17,072 INFO L481 AbstractCegarLoop]: Abstraction has 32677 states and 40890 transitions. [2020-10-27 18:34:17,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:34:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 32677 states and 40890 transitions. [2020-10-27 18:34:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-27 18:34:17,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:17,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 18:34:17,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:34:17,103 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2036933173, now seen corresponding path program 1 times [2020-10-27 18:34:17,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:17,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829068672] [2020-10-27 18:34:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:34:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:34:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:34:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:34:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:34:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 18:34:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:34:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-27 18:34:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-27 18:34:22,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829068672] [2020-10-27 18:34:22,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:22,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:22,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719605519] [2020-10-27 18:34:22,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:22,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:22,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:22,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:22,888 INFO L87 Difference]: Start difference. First operand 32677 states and 40890 transitions. Second operand 5 states.