/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:28:09,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:28:09,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:28:09,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:28:09,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:28:09,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:28:09,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:28:09,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:28:09,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:28:09,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:28:09,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:28:09,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:28:09,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:28:09,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:28:09,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:28:09,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:28:09,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:28:09,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:28:09,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:28:09,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:28:09,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:28:09,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:28:09,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:28:09,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:28:09,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:28:09,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:28:09,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:28:09,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:28:09,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:28:09,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:28:09,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:28:09,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:28:09,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:28:09,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:28:09,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:28:09,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:28:09,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:28:09,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:28:09,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:28:09,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:28:09,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:28:09,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:28:09,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:28:09,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:28:09,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:28:09,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:28:09,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:28:09,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:28:09,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:28:09,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:28:09,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:28:09,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:28:09,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:28:09,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:28:09,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:28:09,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:28:09,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:28:09,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:28:09,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:28:09,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:28:09,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:28:09,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:28:09,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:28:09,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:28:09,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:28:09,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:28:09,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:28:09,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:28:09,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:28:09,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:28:09,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:28:09,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:28:10,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:28:10,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:28:10,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:28:10,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:28:10,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:28:10,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-10-26 23:28:10,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b159a9d3f/291b1724580943fe878e2cb25e43d85f/FLAGe3024e58c [2020-10-26 23:28:11,211 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:28:11,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-10-26 23:28:11,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b159a9d3f/291b1724580943fe878e2cb25e43d85f/FLAGe3024e58c [2020-10-26 23:28:11,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b159a9d3f/291b1724580943fe878e2cb25e43d85f [2020-10-26 23:28:11,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:28:11,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:28:11,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:28:11,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:28:11,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:28:11,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:11" (1/1) ... [2020-10-26 23:28:11,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af74e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:11, skipping insertion in model container [2020-10-26 23:28:11,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:11" (1/1) ... [2020-10-26 23:28:11,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:28:11,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:28:12,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:28:12,062 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:28:12,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:28:12,384 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:28:12,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12 WrapperNode [2020-10-26 23:28:12,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:28:12,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:28:12,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:28:12,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:28:12,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... [2020-10-26 23:28:12,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:28:12,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:28:12,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:28:12,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:28:12,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:28:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:28:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:28:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:28:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:28:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:28:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:28:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:28:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:28:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:28:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:28:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:28:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:28:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:28:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:28:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:28:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:28:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:28:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:28:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:28:14,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:28:14,280 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:28:14,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:14 BoogieIcfgContainer [2020-10-26 23:28:14,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:28:14,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:28:14,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:28:14,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:28:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:28:11" (1/3) ... [2020-10-26 23:28:14,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aacda22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:14, skipping insertion in model container [2020-10-26 23:28:14,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:12" (2/3) ... [2020-10-26 23:28:14,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aacda22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:14, skipping insertion in model container [2020-10-26 23:28:14,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:14" (3/3) ... [2020-10-26 23:28:14,293 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-10-26 23:28:14,307 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:28:14,313 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:28:14,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:28:14,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:28:14,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:28:14,361 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:28:14,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:28:14,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:28:14,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:28:14,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:28:14,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:28:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:28:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 23:28:14,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:14,398 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] [2020-10-26 23:28:14,399 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1228487830, now seen corresponding path program 1 times [2020-10-26 23:28:14,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:14,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181377297] [2020-10-26 23:28:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 23:28:15,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-26 23:28:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 23:28:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:28:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:15,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:28:15,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:15,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181377297] [2020-10-26 23:28:15,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:15,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:28:15,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012672101] [2020-10-26 23:28:15,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:28:15,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:28:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:28:15,624 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:28:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:19,332 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:28:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:28:19,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-26 23:28:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:19,364 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:28:19,365 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:28:19,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:28:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:28:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:28:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:28:19,486 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 55 [2020-10-26 23:28:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:19,487 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:28:19,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:28:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:28:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 23:28:19,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:19,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:19,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:28:19,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:19,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1777519287, now seen corresponding path program 1 times [2020-10-26 23:28:19,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:19,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104474759] [2020-10-26 23:28:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:21,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:21,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:28:21,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-10-26 23:28:21,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:28:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:21,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:28:21,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:28:21,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:28:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:28:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:22,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104474759] [2020-10-26 23:28:22,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:22,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752897159] [2020-10-26 23:28:22,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:22,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:22,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:22,079 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-26 23:28:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:24,687 INFO L93 Difference]: Finished difference Result 1322 states and 2176 transitions. [2020-10-26 23:28:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:28:24,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-26 23:28:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:24,698 INFO L225 Difference]: With dead ends: 1322 [2020-10-26 23:28:24,698 INFO L226 Difference]: Without dead ends: 769 [2020-10-26 23:28:24,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-26 23:28:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 567. [2020-10-26 23:28:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-26 23:28:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 820 transitions. [2020-10-26 23:28:24,748 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 820 transitions. Word has length 129 [2020-10-26 23:28:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:24,749 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 820 transitions. [2020-10-26 23:28:24,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 820 transitions. [2020-10-26 23:28:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-26 23:28:24,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:24,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:24,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:28:24,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 164877157, now seen corresponding path program 1 times [2020-10-26 23:28:24,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:24,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394614120] [2020-10-26 23:28:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:28:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:28:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:28:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:27,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394614120] [2020-10-26 23:28:27,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:27,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:27,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084973151] [2020-10-26 23:28:27,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:27,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:27,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:27,329 INFO L87 Difference]: Start difference. First operand 567 states and 820 transitions. Second operand 7 states. [2020-10-26 23:28:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:29,841 INFO L93 Difference]: Finished difference Result 1336 states and 1928 transitions. [2020-10-26 23:28:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:29,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-26 23:28:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:29,847 INFO L225 Difference]: With dead ends: 1336 [2020-10-26 23:28:29,847 INFO L226 Difference]: Without dead ends: 775 [2020-10-26 23:28:29,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-26 23:28:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 751. [2020-10-26 23:28:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-26 23:28:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1019 transitions. [2020-10-26 23:28:29,884 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1019 transitions. Word has length 138 [2020-10-26 23:28:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:29,884 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1019 transitions. [2020-10-26 23:28:29,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1019 transitions. [2020-10-26 23:28:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-26 23:28:29,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:29,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:28:29,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:28:29,889 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1205389744, now seen corresponding path program 1 times [2020-10-26 23:28:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:29,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216616661] [2020-10-26 23:28:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-26 23:28:34,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-26 23:28:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:28:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:28:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:34,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:28:34,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:28:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:28:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:28:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:28:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 95 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:28:34,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216616661] [2020-10-26 23:28:34,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:34,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:34,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000895087] [2020-10-26 23:28:34,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:34,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:34,914 INFO L87 Difference]: Start difference. First operand 751 states and 1019 transitions. Second operand 8 states. [2020-10-26 23:28:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:37,858 INFO L93 Difference]: Finished difference Result 1572 states and 2300 transitions. [2020-10-26 23:28:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:28:37,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-26 23:28:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:37,872 INFO L225 Difference]: With dead ends: 1572 [2020-10-26 23:28:37,872 INFO L226 Difference]: Without dead ends: 1009 [2020-10-26 23:28:37,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:28:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-26 23:28:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 937. [2020-10-26 23:28:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:28:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1228 transitions. [2020-10-26 23:28:37,946 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1228 transitions. Word has length 222 [2020-10-26 23:28:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:37,948 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1228 transitions. [2020-10-26 23:28:37,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1228 transitions. [2020-10-26 23:28:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-26 23:28:37,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:37,953 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:28:37,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:28:37,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2085530686, now seen corresponding path program 1 times [2020-10-26 23:28:37,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:37,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833676178] [2020-10-26 23:28:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-26 23:28:43,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:28:43,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:28:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:28:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:43,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:28:43,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-26 23:28:43,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:28:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:28:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:28:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:28:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:28:44,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833676178] [2020-10-26 23:28:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:44,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:44,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476340875] [2020-10-26 23:28:44,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:44,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:44,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:44,270 INFO L87 Difference]: Start difference. First operand 937 states and 1228 transitions. Second operand 9 states. [2020-10-26 23:28:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:46,746 INFO L93 Difference]: Finished difference Result 1714 states and 2357 transitions. [2020-10-26 23:28:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:46,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2020-10-26 23:28:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:46,752 INFO L225 Difference]: With dead ends: 1714 [2020-10-26 23:28:46,752 INFO L226 Difference]: Without dead ends: 1149 [2020-10-26 23:28:46,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:28:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-10-26 23:28:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1125. [2020-10-26 23:28:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-26 23:28:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1474 transitions. [2020-10-26 23:28:46,794 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1474 transitions. Word has length 247 [2020-10-26 23:28:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:46,795 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1474 transitions. [2020-10-26 23:28:46,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1474 transitions. [2020-10-26 23:28:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-26 23:28:46,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:46,804 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:46,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:28:46,804 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:46,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 439776163, now seen corresponding path program 1 times [2020-10-26 23:28:46,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:46,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030596062] [2020-10-26 23:28:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-26 23:28:51,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:28:51,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:52,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:52,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:52,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:52,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:28:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:28:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:52,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:28:52,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:28:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-26 23:28:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:52,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:52,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:52,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:28:52,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:28:52,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:28:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 141 proven. 173 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 23:28:53,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030596062] [2020-10-26 23:28:53,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:53,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:53,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499967046] [2020-10-26 23:28:53,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:53,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:53,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:53,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:53,051 INFO L87 Difference]: Start difference. First operand 1125 states and 1474 transitions. Second operand 8 states. [2020-10-26 23:28:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:56,864 INFO L93 Difference]: Finished difference Result 3384 states and 4601 transitions. [2020-10-26 23:28:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:28:56,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 417 [2020-10-26 23:28:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:56,882 INFO L225 Difference]: With dead ends: 3384 [2020-10-26 23:28:56,882 INFO L226 Difference]: Without dead ends: 2447 [2020-10-26 23:28:56,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:28:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2020-10-26 23:28:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2255. [2020-10-26 23:28:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2020-10-26 23:28:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2863 transitions. [2020-10-26 23:28:56,971 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2863 transitions. Word has length 417 [2020-10-26 23:28:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:56,972 INFO L481 AbstractCegarLoop]: Abstraction has 2255 states and 2863 transitions. [2020-10-26 23:28:56,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2863 transitions. [2020-10-26 23:28:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-26 23:28:56,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:56,986 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:56,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:28:56,987 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 197662248, now seen corresponding path program 1 times [2020-10-26 23:28:56,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:56,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034252547] [2020-10-26 23:28:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:29:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:29:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:29:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:29:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:29:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:29:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:29:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:29:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:29:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:03,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:03,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:03,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 277 proven. 203 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-26 23:29:03,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034252547] [2020-10-26 23:29:03,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:03,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:03,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052039338] [2020-10-26 23:29:03,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:03,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:03,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:03,720 INFO L87 Difference]: Start difference. First operand 2255 states and 2863 transitions. Second operand 7 states. [2020-10-26 23:29:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:05,934 INFO L93 Difference]: Finished difference Result 3860 states and 5067 transitions. [2020-10-26 23:29:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:05,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 525 [2020-10-26 23:29:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:05,947 INFO L225 Difference]: With dead ends: 3860 [2020-10-26 23:29:05,947 INFO L226 Difference]: Without dead ends: 1899 [2020-10-26 23:29:05,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:29:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-26 23:29:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1883. [2020-10-26 23:29:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-26 23:29:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2128 transitions. [2020-10-26 23:29:06,041 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2128 transitions. Word has length 525 [2020-10-26 23:29:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:06,042 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states and 2128 transitions. [2020-10-26 23:29:06,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2128 transitions. [2020-10-26 23:29:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-26 23:29:06,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:06,062 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:06,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:29:06,063 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:06,063 INFO L82 PathProgramCache]: Analyzing trace with hash -11792765, now seen corresponding path program 1 times [2020-10-26 23:29:06,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:06,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217031421] [2020-10-26 23:29:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:29:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:11,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:11,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:11,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:11,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:29:11,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:29:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:29:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:11,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:29:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:29:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-26 23:29:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 469 proven. 180 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-10-26 23:29:12,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217031421] [2020-10-26 23:29:12,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:12,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:12,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381390803] [2020-10-26 23:29:12,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:12,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:12,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:12,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:12,374 INFO L87 Difference]: Start difference. First operand 1883 states and 2128 transitions. Second operand 7 states. [2020-10-26 23:29:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:15,561 INFO L93 Difference]: Finished difference Result 4344 states and 5091 transitions. [2020-10-26 23:29:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:15,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-26 23:29:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:15,577 INFO L225 Difference]: With dead ends: 4344 [2020-10-26 23:29:15,577 INFO L226 Difference]: Without dead ends: 2833 [2020-10-26 23:29:15,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-26 23:29:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2819. [2020-10-26 23:29:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-10-26 23:29:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3284 transitions. [2020-10-26 23:29:15,689 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3284 transitions. Word has length 637 [2020-10-26 23:29:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:15,690 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3284 transitions. [2020-10-26 23:29:15,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3284 transitions. [2020-10-26 23:29:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-26 23:29:15,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:15,699 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:15,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:29:15,699 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1652100211, now seen corresponding path program 1 times [2020-10-26 23:29:15,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586560643] [2020-10-26 23:29:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:20,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-26 23:29:20,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:29:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:29:20,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:29:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:29:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:21,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:29:21,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:29:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-26 23:29:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:21,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 680 proven. 256 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-26 23:29:22,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586560643] [2020-10-26 23:29:22,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:22,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:22,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096708404] [2020-10-26 23:29:22,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:22,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:22,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:22,051 INFO L87 Difference]: Start difference. First operand 2819 states and 3284 transitions. Second operand 8 states. [2020-10-26 23:29:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:24,428 INFO L93 Difference]: Finished difference Result 6580 states and 7800 transitions. [2020-10-26 23:29:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:29:24,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 644 [2020-10-26 23:29:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:24,452 INFO L225 Difference]: With dead ends: 6580 [2020-10-26 23:29:24,452 INFO L226 Difference]: Without dead ends: 4133 [2020-10-26 23:29:24,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:29:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2020-10-26 23:29:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3939. [2020-10-26 23:29:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2020-10-26 23:29:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 4532 transitions. [2020-10-26 23:29:24,600 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 4532 transitions. Word has length 644 [2020-10-26 23:29:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:24,601 INFO L481 AbstractCegarLoop]: Abstraction has 3939 states and 4532 transitions. [2020-10-26 23:29:24,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 4532 transitions. [2020-10-26 23:29:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-10-26 23:29:24,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:24,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 23:29:24,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:29:24,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:24,612 INFO L82 PathProgramCache]: Analyzing trace with hash -636969619, now seen corresponding path program 1 times [2020-10-26 23:29:24,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:24,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586623039] [2020-10-26 23:29:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 680 [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:29:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:29:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-26 23:29:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:29:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-26 23:29:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 469 proven. 203 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-10-26 23:29:30,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586623039] [2020-10-26 23:29:30,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:30,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:30,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602588608] [2020-10-26 23:29:30,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:30,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:30,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:30,756 INFO L87 Difference]: Start difference. First operand 3939 states and 4532 transitions. Second operand 7 states. [2020-10-26 23:29:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:32,974 INFO L93 Difference]: Finished difference Result 8066 states and 9362 transitions. [2020-10-26 23:29:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:29:32,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 660 [2020-10-26 23:29:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:33,003 INFO L225 Difference]: With dead ends: 8066 [2020-10-26 23:29:33,004 INFO L226 Difference]: Without dead ends: 4499 [2020-10-26 23:29:33,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:29:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2020-10-26 23:29:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 4495. [2020-10-26 23:29:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2020-10-26 23:29:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 5147 transitions. [2020-10-26 23:29:33,156 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 5147 transitions. Word has length 660 [2020-10-26 23:29:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:33,157 INFO L481 AbstractCegarLoop]: Abstraction has 4495 states and 5147 transitions. [2020-10-26 23:29:33,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 5147 transitions. [2020-10-26 23:29:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2020-10-26 23:29:33,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:33,168 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:33,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:29:33,169 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 375664844, now seen corresponding path program 1 times [2020-10-26 23:29:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:33,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600219935] [2020-10-26 23:29:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 799 [2020-10-26 23:29:38,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:38,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-26 23:29:38,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:29:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:38,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:38,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:29:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-26 23:29:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-10-26 23:29:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:39,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 739 proven. 388 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2020-10-26 23:29:39,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600219935] [2020-10-26 23:29:39,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:39,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:39,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949925144] [2020-10-26 23:29:39,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:39,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:39,731 INFO L87 Difference]: Start difference. First operand 4495 states and 5147 transitions. Second operand 7 states. [2020-10-26 23:29:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:42,661 INFO L93 Difference]: Finished difference Result 8630 states and 9943 transitions. [2020-10-26 23:29:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:42,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 777 [2020-10-26 23:29:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:42,684 INFO L225 Difference]: With dead ends: 8630 [2020-10-26 23:29:42,685 INFO L226 Difference]: Without dead ends: 4507 [2020-10-26 23:29:42,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2020-10-26 23:29:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4501. [2020-10-26 23:29:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4501 states. [2020-10-26 23:29:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 5156 transitions. [2020-10-26 23:29:42,862 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 5156 transitions. Word has length 777 [2020-10-26 23:29:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:42,863 INFO L481 AbstractCegarLoop]: Abstraction has 4501 states and 5156 transitions. [2020-10-26 23:29:42,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 5156 transitions. [2020-10-26 23:29:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-26 23:29:42,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:42,874 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:42,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:29:42,874 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:42,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1624032232, now seen corresponding path program 1 times [2020-10-26 23:29:42,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:42,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297068843] [2020-10-26 23:29:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 23:29:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:29:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,193 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-26 23:29:50,347 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-26 23:29:50,550 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-26 23:29:50,724 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-26 23:29:50,893 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-26 23:29:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-26 23:29:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:29:51,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:29:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 796 proven. 73 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-26 23:29:53,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297068843] [2020-10-26 23:29:53,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:53,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:29:53,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880481992] [2020-10-26 23:29:53,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:29:53,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:53,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:29:53,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:29:53,087 INFO L87 Difference]: Start difference. First operand 4501 states and 5156 transitions. Second operand 13 states. [2020-10-26 23:29:54,314 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-26 23:29:55,169 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-10-26 23:29:55,719 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-10-26 23:29:56,147 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2020-10-26 23:29:56,553 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-10-26 23:29:57,096 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 109 [2020-10-26 23:29:57,573 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 109 [2020-10-26 23:29:59,107 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-26 23:30:00,152 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2020-10-26 23:30:00,633 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2020-10-26 23:30:01,037 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 88 [2020-10-26 23:30:01,630 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2020-10-26 23:30:02,171 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 86 [2020-10-26 23:30:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:03,025 INFO L93 Difference]: Finished difference Result 8820 states and 10161 transitions. [2020-10-26 23:30:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:30:03,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 803 [2020-10-26 23:30:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:03,066 INFO L225 Difference]: With dead ends: 8820 [2020-10-26 23:30:03,066 INFO L226 Difference]: Without dead ends: 4680 [2020-10-26 23:30:03,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:30:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-10-26 23:30:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4674. [2020-10-26 23:30:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-10-26 23:30:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 5335 transitions. [2020-10-26 23:30:03,245 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 5335 transitions. Word has length 803 [2020-10-26 23:30:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:03,246 INFO L481 AbstractCegarLoop]: Abstraction has 4674 states and 5335 transitions. [2020-10-26 23:30:03,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:30:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 5335 transitions. [2020-10-26 23:30:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-26 23:30:03,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:03,257 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:03,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:30:03,258 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1052118668, now seen corresponding path program 1 times [2020-10-26 23:30:03,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:03,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806830550] [2020-10-26 23:30:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:30:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:08,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:30:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:30:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:30:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:09,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2020-10-26 23:30:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:30:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:30:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 643 proven. 247 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2020-10-26 23:30:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806830550] [2020-10-26 23:30:10,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:10,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:10,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283604269] [2020-10-26 23:30:10,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:10,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:10,168 INFO L87 Difference]: Start difference. First operand 4674 states and 5335 transitions. Second operand 8 states. [2020-10-26 23:30:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:12,583 INFO L93 Difference]: Finished difference Result 9716 states and 11117 transitions. [2020-10-26 23:30:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:30:12,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 821 [2020-10-26 23:30:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:12,604 INFO L225 Difference]: With dead ends: 9716 [2020-10-26 23:30:12,604 INFO L226 Difference]: Without dead ends: 5414 [2020-10-26 23:30:12,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:30:12,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2020-10-26 23:30:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5404. [2020-10-26 23:30:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5404 states. [2020-10-26 23:30:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 6081 transitions. [2020-10-26 23:30:12,740 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 6081 transitions. Word has length 821 [2020-10-26 23:30:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:12,741 INFO L481 AbstractCegarLoop]: Abstraction has 5404 states and 6081 transitions. [2020-10-26 23:30:12,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 6081 transitions. [2020-10-26 23:30:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2020-10-26 23:30:12,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:12,755 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:12,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:30:12,755 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:12,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1088997805, now seen corresponding path program 1 times [2020-10-26 23:30:12,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:12,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292966011] [2020-10-26 23:30:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:17,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 926 [2020-10-26 23:30:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:30:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:30:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:30:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:30:18,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:18,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:30:18,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:30:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:18,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:18,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:30:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-26 23:30:19,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:30:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:20,128 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-26 23:30:20,429 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-26 23:30:20,757 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-26 23:30:21,096 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-10-26 23:30:21,480 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:30:21,853 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:30:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 781 [2020-10-26 23:30:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:22,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:22,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 948 proven. 73 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-26 23:30:25,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292966011] [2020-10-26 23:30:25,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:25,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:30:25,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758379043] [2020-10-26 23:30:25,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:30:25,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:25,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:30:25,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:25,623 INFO L87 Difference]: Start difference. First operand 5404 states and 6081 transitions. Second operand 13 states. [2020-10-26 23:30:25,910 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-10-26 23:30:27,011 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 91 [2020-10-26 23:30:27,414 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 96 [2020-10-26 23:30:27,896 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2020-10-26 23:30:28,297 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-10-26 23:30:29,010 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-10-26 23:30:29,652 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 116 [2020-10-26 23:30:30,381 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-26 23:30:30,984 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2020-10-26 23:30:32,074 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2020-10-26 23:30:32,589 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2020-10-26 23:30:33,125 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2020-10-26 23:30:33,579 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 96 [2020-10-26 23:30:34,274 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 96 [2020-10-26 23:30:34,999 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 99 [2020-10-26 23:30:35,990 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-26 23:30:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:36,462 INFO L93 Difference]: Finished difference Result 10622 states and 12003 transitions. [2020-10-26 23:30:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:30:36,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 902 [2020-10-26 23:30:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:36,480 INFO L225 Difference]: With dead ends: 10622 [2020-10-26 23:30:36,480 INFO L226 Difference]: Without dead ends: 5482 [2020-10-26 23:30:36,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:30:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2020-10-26 23:30:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5478. [2020-10-26 23:30:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5478 states. [2020-10-26 23:30:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6156 transitions. [2020-10-26 23:30:36,616 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6156 transitions. Word has length 902 [2020-10-26 23:30:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:36,618 INFO L481 AbstractCegarLoop]: Abstraction has 5478 states and 6156 transitions. [2020-10-26 23:30:36,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:30:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6156 transitions. [2020-10-26 23:30:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-26 23:30:36,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:36,633 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:36,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:30:36,633 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash -224642712, now seen corresponding path program 1 times [2020-10-26 23:30:36,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:36,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132571542] [2020-10-26 23:30:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:41,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-26 23:30:41,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:30:41,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:30:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:30:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:42,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:42,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:30:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:30:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:30:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:30:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 903 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:30:43,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132571542] [2020-10-26 23:30:43,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:43,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433871365] [2020-10-26 23:30:43,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:43,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:43,218 INFO L87 Difference]: Start difference. First operand 5478 states and 6156 transitions. Second operand 7 states. [2020-10-26 23:30:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:45,620 INFO L93 Difference]: Finished difference Result 11136 states and 12542 transitions. [2020-10-26 23:30:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:45,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 978 [2020-10-26 23:30:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:45,647 INFO L225 Difference]: With dead ends: 11136 [2020-10-26 23:30:45,647 INFO L226 Difference]: Without dead ends: 6030 [2020-10-26 23:30:45,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2020-10-26 23:30:45,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 6028. [2020-10-26 23:30:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6028 states. [2020-10-26 23:30:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 6617 transitions. [2020-10-26 23:30:45,802 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 6617 transitions. Word has length 978 [2020-10-26 23:30:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:45,804 INFO L481 AbstractCegarLoop]: Abstraction has 6028 states and 6617 transitions. [2020-10-26 23:30:45,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 6617 transitions. [2020-10-26 23:30:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-26 23:30:45,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:45,823 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:45,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:30:45,823 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash 209934480, now seen corresponding path program 1 times [2020-10-26 23:30:45,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:45,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252257707] [2020-10-26 23:30:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-26 23:30:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:30:51,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:51,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:30:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:52,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:30:52,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:30:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:30:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3041 backedges. 1582 proven. 93 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:30:52,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252257707] [2020-10-26 23:30:52,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:52,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:30:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059605643] [2020-10-26 23:30:52,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:30:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:30:52,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:52,673 INFO L87 Difference]: Start difference. First operand 6028 states and 6617 transitions. Second operand 10 states. [2020-10-26 23:30:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:56,884 INFO L93 Difference]: Finished difference Result 14267 states and 15805 transitions. [2020-10-26 23:30:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:30:56,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 998 [2020-10-26 23:30:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:56,914 INFO L225 Difference]: With dead ends: 14267 [2020-10-26 23:30:56,914 INFO L226 Difference]: Without dead ends: 8611 [2020-10-26 23:30:56,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:30:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2020-10-26 23:30:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 8058. [2020-10-26 23:30:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8058 states. [2020-10-26 23:30:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 8933 transitions. [2020-10-26 23:30:57,131 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 8933 transitions. Word has length 998 [2020-10-26 23:30:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:57,133 INFO L481 AbstractCegarLoop]: Abstraction has 8058 states and 8933 transitions. [2020-10-26 23:30:57,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:30:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 8933 transitions. [2020-10-26 23:30:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-26 23:30:57,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:57,159 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:30:57,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:30:57,159 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash 494690864, now seen corresponding path program 1 times [2020-10-26 23:30:57,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:57,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327425433] [2020-10-26 23:30:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1155 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:31:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:02,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:31:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-26 23:31:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2020-10-26 23:31:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1023 proven. 223 refuted. 0 times theorem prover too weak. 2350 trivial. 0 not checked. [2020-10-26 23:31:04,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327425433] [2020-10-26 23:31:04,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:04,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:04,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660662074] [2020-10-26 23:31:04,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:04,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:04,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:04,385 INFO L87 Difference]: Start difference. First operand 8058 states and 8933 transitions. Second operand 7 states. [2020-10-26 23:31:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:06,661 INFO L93 Difference]: Finished difference Result 15928 states and 17703 transitions. [2020-10-26 23:31:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:31:06,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1129 [2020-10-26 23:31:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:06,697 INFO L225 Difference]: With dead ends: 15928 [2020-10-26 23:31:06,697 INFO L226 Difference]: Without dead ends: 8058 [2020-10-26 23:31:06,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8058 states. [2020-10-26 23:31:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8058 to 7506. [2020-10-26 23:31:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7506 states. [2020-10-26 23:31:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7506 states to 7506 states and 8294 transitions. [2020-10-26 23:31:06,906 INFO L78 Accepts]: Start accepts. Automaton has 7506 states and 8294 transitions. Word has length 1129 [2020-10-26 23:31:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:06,908 INFO L481 AbstractCegarLoop]: Abstraction has 7506 states and 8294 transitions. [2020-10-26 23:31:06,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 7506 states and 8294 transitions. [2020-10-26 23:31:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2020-10-26 23:31:06,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:06,935 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:06,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:31:06,935 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash 588065288, now seen corresponding path program 1 times [2020-10-26 23:31:06,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:06,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514368485] [2020-10-26 23:31:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1184 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:12,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:12,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:12,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:31:12,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:13,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 23:31:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:31:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:31:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,723 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-26 23:31:15,139 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-26 23:31:15,524 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-10-26 23:31:15,909 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-26 23:31:16,314 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-10-26 23:31:16,740 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2020-10-26 23:31:16,903 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-26 23:31:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:31:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3680 backedges. 1237 proven. 93 refuted. 0 times theorem prover too weak. 2350 trivial. 0 not checked. [2020-10-26 23:31:21,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514368485] [2020-10-26 23:31:21,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:21,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:31:21,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337382588] [2020-10-26 23:31:21,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:31:21,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:21,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:31:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:31:21,759 INFO L87 Difference]: Start difference. First operand 7506 states and 8294 transitions. Second operand 13 states. [2020-10-26 23:31:22,033 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-26 23:31:23,006 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2020-10-26 23:31:23,430 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2020-10-26 23:31:24,284 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2020-10-26 23:31:24,708 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 92 [2020-10-26 23:31:25,185 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 95 [2020-10-26 23:31:25,932 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 102 [2020-10-26 23:31:26,864 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 94 [2020-10-26 23:31:27,541 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-26 23:31:27,968 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2020-10-26 23:31:28,374 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-26 23:31:29,427 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2020-10-26 23:31:29,915 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2020-10-26 23:31:30,553 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2020-10-26 23:31:30,848 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 30 [2020-10-26 23:31:31,218 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2020-10-26 23:31:31,897 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 95 [2020-10-26 23:31:32,820 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 85 [2020-10-26 23:31:33,870 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2020-10-26 23:31:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:34,231 INFO L93 Difference]: Finished difference Result 14830 states and 16434 transitions. [2020-10-26 23:31:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 23:31:34,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1158 [2020-10-26 23:31:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:34,257 INFO L225 Difference]: With dead ends: 14830 [2020-10-26 23:31:34,257 INFO L226 Difference]: Without dead ends: 7676 [2020-10-26 23:31:34,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 23:31:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2020-10-26 23:31:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 7670. [2020-10-26 23:31:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7670 states. [2020-10-26 23:31:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 8462 transitions. [2020-10-26 23:31:34,430 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 8462 transitions. Word has length 1158 [2020-10-26 23:31:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:34,432 INFO L481 AbstractCegarLoop]: Abstraction has 7670 states and 8462 transitions. [2020-10-26 23:31:34,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:31:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 8462 transitions. [2020-10-26 23:31:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2020-10-26 23:31:34,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:34,457 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:34,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:31:34,458 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:34,458 INFO L82 PathProgramCache]: Analyzing trace with hash -240088102, now seen corresponding path program 1 times [2020-10-26 23:31:34,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:34,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48720168] [2020-10-26 23:31:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking...