/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:23:44,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:23:44,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:23:44,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:23:44,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:23:44,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:23:44,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:23:44,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:23:44,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:23:44,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:23:44,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:23:44,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:23:44,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:23:44,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:23:44,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:23:44,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:23:44,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:23:44,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:23:44,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:23:44,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:23:44,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:23:44,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:23:44,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:23:44,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:23:44,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:23:44,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:23:44,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:23:44,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:23:44,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:23:44,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:23:44,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:23:44,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:23:44,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:23:44,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:23:44,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:23:44,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:23:44,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:23:44,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:23:44,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:23:44,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:23:44,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:23:44,352 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 18:23:44,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:23:44,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:23:44,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:23:44,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:23:44,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:23:44,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:23:44,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:23:44,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:23:44,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:23:44,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:23:44,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:23:44,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:23:44,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:23:44,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:23:44,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:23:44,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:23:44,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:23:44,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:23:44,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:23:44,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:23:44,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:23:44,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:23:44,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:23:44,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:23:44,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:23:44,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:23:44,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:23:44,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:23:44,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:23:44,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:23:44,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:23:44,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:23:44,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:23:44,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:23:44,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:23:44,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-27 18:23:44,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb06549a/06730f0aa23e41418e950d32c2017ad3/FLAGc8733e918 [2020-10-27 18:23:45,968 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:23:45,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-27 18:23:45,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb06549a/06730f0aa23e41418e950d32c2017ad3/FLAGc8733e918 [2020-10-27 18:23:46,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb06549a/06730f0aa23e41418e950d32c2017ad3 [2020-10-27 18:23:46,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:23:46,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:23:46,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:23:46,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:23:46,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:23:46,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:23:46" (1/1) ... [2020-10-27 18:23:46,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:46, skipping insertion in model container [2020-10-27 18:23:46,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:23:46" (1/1) ... [2020-10-27 18:23:46,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:23:46,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:23:47,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:23:47,123 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:23:47,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:23:47,404 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:23:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47 WrapperNode [2020-10-27 18:23:47,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:23:47,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:23:47,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:23:47,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:23:47,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (1/1) ... [2020-10-27 18:23:47,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:23:47,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:23:47,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:23:47,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:23:47,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (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 18:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:23:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:23:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:23:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:23:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:23:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:23:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:23:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:23:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:23:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:23:51,257 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:23:51,257 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:23:51,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:23:51 BoogieIcfgContainer [2020-10-27 18:23:51,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:23:51,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:23:51,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:23:51,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:23:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:23:46" (1/3) ... [2020-10-27 18:23:51,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:23:51, skipping insertion in model container [2020-10-27 18:23:51,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:23:47" (2/3) ... [2020-10-27 18:23:51,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:23:51, skipping insertion in model container [2020-10-27 18:23:51,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:23:51" (3/3) ... [2020-10-27 18:23:51,270 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label21.c [2020-10-27 18:23:51,283 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:23:51,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:23:51,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:23:51,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:23:51,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:23:51,338 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:23:51,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:23:51,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:23:51,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:23:51,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:23:51,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:23:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:23:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 18:23:51,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:51,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:23:51,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1868936201, now seen corresponding path program 1 times [2020-10-27 18:23:51,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:51,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39592355] [2020-10-27 18:23:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:52,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:52,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:23:52,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-27 18:23:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:23:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:23:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 18:23:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:23:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:52,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:23:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:23:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:52,505 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 18:23:52,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39592355] [2020-10-27 18:23:52,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:23:52,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:23:52,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85958348] [2020-10-27 18:23:52,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:23:52,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:52,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:23:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:23:52,534 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:23:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:58,505 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-27 18:23:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:58,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 18:23:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:58,534 INFO L225 Difference]: With dead ends: 1229 [2020-10-27 18:23:58,534 INFO L226 Difference]: Without dead ends: 709 [2020-10-27 18:23:58,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:23:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-27 18:23:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-27 18:23:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-27 18:23:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-27 18:23:58,666 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 67 [2020-10-27 18:23:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:58,668 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-27 18:23:58,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:23:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-27 18:23:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 18:23:58,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:58,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:23:58,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:23:58,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash -288530017, now seen corresponding path program 1 times [2020-10-27 18:23:58,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:58,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031194966] [2020-10-27 18:23:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:00,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:00,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 18:24:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:24:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-27 18:24:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 18:24:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 18:24:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:24:01,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:01,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:24:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:01,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:01,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:01,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:01,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:24:01,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:24:01,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:24:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:24:01,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031194966] [2020-10-27 18:24:01,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:01,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:01,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15406384] [2020-10-27 18:24:01,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:01,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:01,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:01,342 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 5 states. [2020-10-27 18:24:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:09,496 INFO L93 Difference]: Finished difference Result 1112 states and 1768 transitions. [2020-10-27 18:24:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:09,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-27 18:24:09,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:09,504 INFO L225 Difference]: With dead ends: 1112 [2020-10-27 18:24:09,504 INFO L226 Difference]: Without dead ends: 701 [2020-10-27 18:24:09,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 18:24:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-27 18:24:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 695. [2020-10-27 18:24:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-27 18:24:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1079 transitions. [2020-10-27 18:24:09,562 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1079 transitions. Word has length 137 [2020-10-27 18:24:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:09,565 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1079 transitions. [2020-10-27 18:24:09,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1079 transitions. [2020-10-27 18:24:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 18:24:09,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:09,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:09,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:24:09,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1935298371, now seen corresponding path program 1 times [2020-10-27 18:24:09,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:09,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970199882] [2020-10-27 18:24:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 18:24:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:24:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-27 18:24:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 18:24:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:24:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:11,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:24:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:24:11,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:24:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:24:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:24:11,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970199882] [2020-10-27 18:24:11,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:11,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:11,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596192735] [2020-10-27 18:24:11,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:11,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:11,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:11,631 INFO L87 Difference]: Start difference. First operand 695 states and 1079 transitions. Second operand 5 states. [2020-10-27 18:24:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:19,681 INFO L93 Difference]: Finished difference Result 1406 states and 2312 transitions. [2020-10-27 18:24:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:19,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 18:24:19,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:19,692 INFO L225 Difference]: With dead ends: 1406 [2020-10-27 18:24:19,692 INFO L226 Difference]: Without dead ends: 1032 [2020-10-27 18:24:19,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:19,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-10-27 18:24:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1020. [2020-10-27 18:24:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-10-27 18:24:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1534 transitions. [2020-10-27 18:24:19,732 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1534 transitions. Word has length 139 [2020-10-27 18:24:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:19,733 INFO L481 AbstractCegarLoop]: Abstraction has 1020 states and 1534 transitions. [2020-10-27 18:24:19,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1534 transitions. [2020-10-27 18:24:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 18:24:19,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:19,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:19,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:24:19,736 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash -941988633, now seen corresponding path program 1 times [2020-10-27 18:24:19,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:19,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012802278] [2020-10-27 18:24:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:21,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:21,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 18:24:21,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:24:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-27 18:24:21,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 18:24:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:24:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:21,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:21,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:21,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:24:21,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:24:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:24:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:24:21,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012802278] [2020-10-27 18:24:21,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:21,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:21,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450390907] [2020-10-27 18:24:21,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:21,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:21,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:21,533 INFO L87 Difference]: Start difference. First operand 1020 states and 1534 transitions. Second operand 5 states. [2020-10-27 18:24:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:32,208 INFO L93 Difference]: Finished difference Result 2979 states and 4523 transitions. [2020-10-27 18:24:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:32,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 18:24:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:32,221 INFO L225 Difference]: With dead ends: 2979 [2020-10-27 18:24:32,222 INFO L226 Difference]: Without dead ends: 1965 [2020-10-27 18:24:32,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-10-27 18:24:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2020-10-27 18:24:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-27 18:24:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2620 transitions. [2020-10-27 18:24:32,288 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2620 transitions. Word has length 141 [2020-10-27 18:24:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:32,288 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 2620 transitions. [2020-10-27 18:24:32,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2620 transitions. [2020-10-27 18:24:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 18:24:32,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:32,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:32,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:24:32,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1379614764, now seen corresponding path program 1 times [2020-10-27 18:24:32,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:32,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678563587] [2020-10-27 18:24:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:34,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:34,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:24:34,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-10-27 18:24:34,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:24:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:24:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:34,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:34,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:24:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:24:34,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:24:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:24:34,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678563587] [2020-10-27 18:24:34,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:34,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:34,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942567993] [2020-10-27 18:24:34,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:34,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:34,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:34,668 INFO L87 Difference]: Start difference. First operand 1965 states and 2620 transitions. Second operand 5 states. [2020-10-27 18:24:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:43,209 INFO L93 Difference]: Finished difference Result 3924 states and 5459 transitions. [2020-10-27 18:24:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:43,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 18:24:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:43,229 INFO L225 Difference]: With dead ends: 3924 [2020-10-27 18:24:43,229 INFO L226 Difference]: Without dead ends: 2590 [2020-10-27 18:24:43,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2020-10-27 18:24:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2588. [2020-10-27 18:24:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-10-27 18:24:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3341 transitions. [2020-10-27 18:24:43,322 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3341 transitions. Word has length 142 [2020-10-27 18:24:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:43,322 INFO L481 AbstractCegarLoop]: Abstraction has 2588 states and 3341 transitions. [2020-10-27 18:24:43,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3341 transitions. [2020-10-27 18:24:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 18:24:43,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:43,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:43,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:24:43,326 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:43,327 INFO L82 PathProgramCache]: Analyzing trace with hash 587851051, now seen corresponding path program 1 times [2020-10-27 18:24:43,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:43,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933917915] [2020-10-27 18:24:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:45,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:24:45,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-27 18:24:45,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 18:24:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:24:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:45,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:45,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 18:24:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:24:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:24:45,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933917915] [2020-10-27 18:24:45,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:45,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:24:45,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959788169] [2020-10-27 18:24:45,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:24:45,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:45,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:24:45,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:45,555 INFO L87 Difference]: Start difference. First operand 2588 states and 3341 transitions. Second operand 6 states. [2020-10-27 18:25:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:01,640 INFO L93 Difference]: Finished difference Result 8267 states and 10883 transitions. [2020-10-27 18:25:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:25:01,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-10-27 18:25:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:01,676 INFO L225 Difference]: With dead ends: 8267 [2020-10-27 18:25:01,676 INFO L226 Difference]: Without dead ends: 6310 [2020-10-27 18:25:01,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:25:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2020-10-27 18:25:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 6310. [2020-10-27 18:25:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6310 states. [2020-10-27 18:25:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6310 states to 6310 states and 7456 transitions. [2020-10-27 18:25:01,873 INFO L78 Accepts]: Start accepts. Automaton has 6310 states and 7456 transitions. Word has length 166 [2020-10-27 18:25:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:01,873 INFO L481 AbstractCegarLoop]: Abstraction has 6310 states and 7456 transitions. [2020-10-27 18:25:01,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:25:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6310 states and 7456 transitions. [2020-10-27 18:25:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 18:25:01,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:01,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:25:01,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:25:01,878 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:01,879 INFO L82 PathProgramCache]: Analyzing trace with hash 535697498, now seen corresponding path program 1 times [2020-10-27 18:25:01,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:01,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832846860] [2020-10-27 18:25:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:02,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:03,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 18:25:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:25:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1903 [2020-10-27 18:25:03,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 18:25:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:25:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:03,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:25:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:04,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:04,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 18:25:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 18:25:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 18:25:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:25:04,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832846860] [2020-10-27 18:25:04,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:04,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:04,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498990922] [2020-10-27 18:25:04,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:04,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:04,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:04,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:04,315 INFO L87 Difference]: Start difference. First operand 6310 states and 7456 transitions. Second operand 5 states. [2020-10-27 18:25:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:14,879 INFO L93 Difference]: Finished difference Result 13252 states and 15920 transitions. [2020-10-27 18:25:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:14,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 18:25:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:14,920 INFO L225 Difference]: With dead ends: 13252 [2020-10-27 18:25:14,920 INFO L226 Difference]: Without dead ends: 7573 [2020-10-27 18:25:14,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 18:25:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2020-10-27 18:25:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 7558. [2020-10-27 18:25:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7558 states. [2020-10-27 18:25:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7558 states to 7558 states and 9008 transitions. [2020-10-27 18:25:15,218 INFO L78 Accepts]: Start accepts. Automaton has 7558 states and 9008 transitions. Word has length 170 [2020-10-27 18:25:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:15,219 INFO L481 AbstractCegarLoop]: Abstraction has 7558 states and 9008 transitions. [2020-10-27 18:25:15,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7558 states and 9008 transitions. [2020-10-27 18:25:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 18:25:15,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:15,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:25:15,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:25:15,226 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:15,227 INFO L82 PathProgramCache]: Analyzing trace with hash 346156654, now seen corresponding path program 1 times [2020-10-27 18:25:15,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:15,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251925807] [2020-10-27 18:25:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 18:25:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:25:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:17,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:17,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:17,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:17,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 18:25:17,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:17,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:17,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 18:25:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:25:17,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 18:25:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:25:17,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251925807] [2020-10-27 18:25:17,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:17,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:17,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806118741] [2020-10-27 18:25:17,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:17,304 INFO L87 Difference]: Start difference. First operand 7558 states and 9008 transitions. Second operand 5 states. [2020-10-27 18:25:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:28,942 INFO L93 Difference]: Finished difference Result 16664 states and 20289 transitions. [2020-10-27 18:25:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:28,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-27 18:25:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:28,995 INFO L225 Difference]: With dead ends: 16664 [2020-10-27 18:25:28,996 INFO L226 Difference]: Without dead ends: 9733 [2020-10-27 18:25:29,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 18:25:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9733 states. [2020-10-27 18:25:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9733 to 9730. [2020-10-27 18:25:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9730 states. [2020-10-27 18:25:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9730 states to 9730 states and 11504 transitions. [2020-10-27 18:25:29,393 INFO L78 Accepts]: Start accepts. Automaton has 9730 states and 11504 transitions. Word has length 180 [2020-10-27 18:25:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:29,394 INFO L481 AbstractCegarLoop]: Abstraction has 9730 states and 11504 transitions. [2020-10-27 18:25:29,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9730 states and 11504 transitions. [2020-10-27 18:25:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 18:25:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:29,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:25:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:25:29,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 219756508, now seen corresponding path program 1 times [2020-10-27 18:25:29,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537227321] [2020-10-27 18:25:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:30,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:30,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 18:25:30,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:25:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-27 18:25:30,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 18:25:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:25:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:25:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:30,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:30,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:30,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:25:31,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537227321] [2020-10-27 18:25:31,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:31,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:31,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132248679] [2020-10-27 18:25:31,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:31,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:31,122 INFO L87 Difference]: Start difference. First operand 9730 states and 11504 transitions. Second operand 5 states. [2020-10-27 18:25:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:40,168 INFO L93 Difference]: Finished difference Result 21313 states and 25755 transitions. [2020-10-27 18:25:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:40,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 18:25:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:40,210 INFO L225 Difference]: With dead ends: 21313 [2020-10-27 18:25:40,210 INFO L226 Difference]: Without dead ends: 12208 [2020-10-27 18:25:40,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:25:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12208 states. [2020-10-27 18:25:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12208 to 12197. [2020-10-27 18:25:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12197 states. [2020-10-27 18:25:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 14332 transitions. [2020-10-27 18:25:40,549 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 14332 transitions. Word has length 196 [2020-10-27 18:25:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:40,550 INFO L481 AbstractCegarLoop]: Abstraction has 12197 states and 14332 transitions. [2020-10-27 18:25:40,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 14332 transitions. [2020-10-27 18:25:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 18:25:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:40,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:25:40,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:25:40,561 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash 806745723, now seen corresponding path program 1 times [2020-10-27 18:25:40,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:40,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302174148] [2020-10-27 18:25:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:45,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 18:25:45,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:25:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 18:25:45,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 18:25:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:25:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:45,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:45,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:45,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:25:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:25:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 18:25:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 18:25:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:25:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:25:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:25:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 18:25:46,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302174148] [2020-10-27 18:25:46,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:46,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:46,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97726398] [2020-10-27 18:25:46,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:46,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:46,143 INFO L87 Difference]: Start difference. First operand 12197 states and 14332 transitions. Second operand 5 states. [2020-10-27 18:25:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:57,537 INFO L93 Difference]: Finished difference Result 26889 states and 32014 transitions. [2020-10-27 18:25:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:57,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 18:25:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:57,592 INFO L225 Difference]: With dead ends: 26889 [2020-10-27 18:25:57,593 INFO L226 Difference]: Without dead ends: 15006 [2020-10-27 18:25:57,619 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 18:25:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2020-10-27 18:25:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14994. [2020-10-27 18:25:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14994 states. [2020-10-27 18:25:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14994 states to 14994 states and 17527 transitions. [2020-10-27 18:25:57,963 INFO L78 Accepts]: Start accepts. Automaton has 14994 states and 17527 transitions. Word has length 217 [2020-10-27 18:25:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:57,963 INFO L481 AbstractCegarLoop]: Abstraction has 14994 states and 17527 transitions. [2020-10-27 18:25:57,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14994 states and 17527 transitions. [2020-10-27 18:25:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-27 18:25:57,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:57,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:25:57,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:25:57,977 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:57,977 INFO L82 PathProgramCache]: Analyzing trace with hash -642867793, now seen corresponding path program 1 times [2020-10-27 18:25:57,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:57,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820183564] [2020-10-27 18:25:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:02,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:02,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 18:26:02,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4275 [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 18:26:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:02,714 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2020-10-27 18:26:02,936 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:26:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:02,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:02,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 18:26:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:26:03,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820183564] [2020-10-27 18:26:03,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:03,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:26:03,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823052434] [2020-10-27 18:26:03,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:26:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:26:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:26:03,501 INFO L87 Difference]: Start difference. First operand 14994 states and 17527 transitions. Second operand 8 states. [2020-10-27 18:26:04,544 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 18:26:05,492 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-27 18:26:05,966 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-27 18:26:06,876 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:26:07,967 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 18:26:08,400 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 18:26:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:17,595 INFO L93 Difference]: Finished difference Result 29283 states and 34347 transitions. [2020-10-27 18:26:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 18:26:17,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 234 [2020-10-27 18:26:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:17,660 INFO L225 Difference]: With dead ends: 29283 [2020-10-27 18:26:17,661 INFO L226 Difference]: Without dead ends: 14059 [2020-10-27 18:26:17,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-27 18:26:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14059 states. [2020-10-27 18:26:17,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14059 to 14059. [2020-10-27 18:26:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14059 states. [2020-10-27 18:26:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 16001 transitions. [2020-10-27 18:26:17,980 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 16001 transitions. Word has length 234 [2020-10-27 18:26:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:17,981 INFO L481 AbstractCegarLoop]: Abstraction has 14059 states and 16001 transitions. [2020-10-27 18:26:17,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:26:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 16001 transitions. [2020-10-27 18:26:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-27 18:26:17,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:17,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:17,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:26:17,998 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash 602730692, now seen corresponding path program 1 times [2020-10-27 18:26:17,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:17,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151151520] [2020-10-27 18:26:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:23,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:23,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:26:23,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:26:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 18:26:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:26:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:26:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 18:26:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:23,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:23,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:23,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 18:26:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:26:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:26:23,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151151520] [2020-10-27 18:26:23,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:23,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:26:23,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475878743] [2020-10-27 18:26:23,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:26:23,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:23,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:26:23,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:26:23,931 INFO L87 Difference]: Start difference. First operand 14059 states and 16001 transitions. Second operand 8 states. [2020-10-27 18:26:27,765 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:26:28,777 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 18:26:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:36,117 INFO L93 Difference]: Finished difference Result 27860 states and 31736 transitions. [2020-10-27 18:26:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:26:36,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 271 [2020-10-27 18:26:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:36,166 INFO L225 Difference]: With dead ends: 27860 [2020-10-27 18:26:36,166 INFO L226 Difference]: Without dead ends: 14059 [2020-10-27 18:26:36,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:26:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14059 states. [2020-10-27 18:26:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14059 to 14059. [2020-10-27 18:26:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14059 states. [2020-10-27 18:26:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 15965 transitions. [2020-10-27 18:26:36,582 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 15965 transitions. Word has length 271 [2020-10-27 18:26:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:36,583 INFO L481 AbstractCegarLoop]: Abstraction has 14059 states and 15965 transitions. [2020-10-27 18:26:36,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:26:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 15965 transitions. [2020-10-27 18:26:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-27 18:26:36,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:36,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:36,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:26:36,692 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash -339399838, now seen corresponding path program 1 times [2020-10-27 18:26:36,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:36,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039343014] [2020-10-27 18:26:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:41,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:26:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:26:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:26:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 18:26:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 18:26:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 18:26:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 18:26:42,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039343014] [2020-10-27 18:26:42,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:42,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:26:42,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414248099] [2020-10-27 18:26:42,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:26:42,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:42,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:26:42,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:26:42,440 INFO L87 Difference]: Start difference. First operand 14059 states and 15965 transitions. Second operand 5 states. [2020-10-27 18:26:48,356 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 18:26:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:50,552 INFO L93 Difference]: Finished difference Result 27832 states and 31626 transitions. [2020-10-27 18:26:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:26:50,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 349 [2020-10-27 18:26:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:50,594 INFO L225 Difference]: With dead ends: 27832 [2020-10-27 18:26:50,594 INFO L226 Difference]: Without dead ends: 14059 [2020-10-27 18:26:50,613 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 18:26:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14059 states. [2020-10-27 18:26:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14059 to 14059. [2020-10-27 18:26:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14059 states. [2020-10-27 18:26:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 15958 transitions. [2020-10-27 18:26:50,861 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 15958 transitions. Word has length 349 [2020-10-27 18:26:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:50,862 INFO L481 AbstractCegarLoop]: Abstraction has 14059 states and 15958 transitions. [2020-10-27 18:26:50,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:26:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 15958 transitions. [2020-10-27 18:26:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 18:26:50,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:50,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:50,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:26:50,883 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1980584605, now seen corresponding path program 1 times [2020-10-27 18:26:50,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:50,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616210634] [2020-10-27 18:26:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:26:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:26:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:56,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:26:56,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:26:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 18:26:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:56,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 18:26:56,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 18:26:56,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616210634] [2020-10-27 18:26:56,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:56,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:26:56,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689177616] [2020-10-27 18:26:56,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:26:56,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:56,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:26:56,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:26:56,587 INFO L87 Difference]: Start difference. First operand 14059 states and 15958 transitions. Second operand 5 states. [2020-10-27 18:27:08,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:08,110 INFO L93 Difference]: Finished difference Result 28113 states and 32104 transitions. [2020-10-27 18:27:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:08,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-10-27 18:27:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:08,143 INFO L225 Difference]: With dead ends: 28113 [2020-10-27 18:27:08,143 INFO L226 Difference]: Without dead ends: 14368 [2020-10-27 18:27:08,158 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 18:27:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14368 states. [2020-10-27 18:27:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14368 to 14061. [2020-10-27 18:27:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14061 states. [2020-10-27 18:27:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14061 states to 14061 states and 15965 transitions. [2020-10-27 18:27:08,408 INFO L78 Accepts]: Start accepts. Automaton has 14061 states and 15965 transitions. Word has length 354 [2020-10-27 18:27:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:08,408 INFO L481 AbstractCegarLoop]: Abstraction has 14061 states and 15965 transitions. [2020-10-27 18:27:08,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:27:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 14061 states and 15965 transitions. [2020-10-27 18:27:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-27 18:27:08,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:08,428 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:08,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:27:08,429 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash -275303467, now seen corresponding path program 1 times [2020-10-27 18:27:08,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:08,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527849028] [2020-10-27 18:27:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-27 18:27:13,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:27:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:13,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:13,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 18:27:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 18:27:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:13,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:13,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 18:27:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-27 18:27:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527849028] [2020-10-27 18:27:13,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:13,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:27:13,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889327764] [2020-10-27 18:27:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:27:13,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:27:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:27:13,990 INFO L87 Difference]: Start difference. First operand 14061 states and 15965 transitions. Second operand 5 states. [2020-10-27 18:27:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:25,921 INFO L93 Difference]: Finished difference Result 35539 states and 40655 transitions. [2020-10-27 18:27:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:25,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2020-10-27 18:27:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:25,977 INFO L225 Difference]: With dead ends: 35539 [2020-10-27 18:27:25,977 INFO L226 Difference]: Without dead ends: 21792 [2020-10-27 18:27:26,000 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 18:27:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21792 states. [2020-10-27 18:27:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21792 to 18108. [2020-10-27 18:27:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18108 states. [2020-10-27 18:27:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 20859 transitions. [2020-10-27 18:27:26,403 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 20859 transitions. Word has length 358 [2020-10-27 18:27:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:26,404 INFO L481 AbstractCegarLoop]: Abstraction has 18108 states and 20859 transitions. [2020-10-27 18:27:26,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:27:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 20859 transitions. [2020-10-27 18:27:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-27 18:27:26,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:26,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:26,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:27:26,444 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:26,445 INFO L82 PathProgramCache]: Analyzing trace with hash 701745745, now seen corresponding path program 1 times [2020-10-27 18:27:26,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:26,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229789257] [2020-10-27 18:27:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking...