/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem03_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:18:45,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:18:45,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:18:45,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:18:45,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:18:45,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:18:45,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:18:45,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:18:45,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:18:45,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:18:45,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:18:45,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:18:45,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:18:45,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:18:45,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:18:45,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:18:45,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:18:45,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:18:45,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:18:45,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:18:45,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:18:45,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:18:45,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:18:45,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:18:45,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:18:45,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:18:45,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:18:45,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:18:45,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:18:45,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:18:45,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:18:45,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:18:45,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:18:45,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:18:45,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:18:45,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:18:45,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:18:45,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:18:45,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:18:45,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:18:45,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:18:45,578 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 [2020-10-28 10:18:45,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:18:45,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:18:45,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:18:45,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:18:45,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:18:45,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:18:45,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:18:45,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:18:45,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:18:45,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:18:45,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:18:45,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:18:45,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:18:45,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:18:45,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:18:45,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:18:45,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:18:45,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:18:45,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:18:45,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:18:45,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:18:45,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:18:45,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:18:45,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:18:45,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:18:45,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:18:45,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:18:45,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:18:45,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:18:45,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:18:46,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:18:46,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:18:46,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:18:46,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:18:46,185 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:18:46,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-28 10:18:46,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9255b8a1b/2dd9b1d1fca04fb0a95f5c2910433a8b/FLAG5872e1824 [2020-10-28 10:18:47,115 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:18:47,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-28 10:18:47,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9255b8a1b/2dd9b1d1fca04fb0a95f5c2910433a8b/FLAG5872e1824 [2020-10-28 10:18:47,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9255b8a1b/2dd9b1d1fca04fb0a95f5c2910433a8b [2020-10-28 10:18:47,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:18:47,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:18:47,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:18:47,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:18:47,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:18:47,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:18:47" (1/1) ... [2020-10-28 10:18:47,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b36651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:47, skipping insertion in model container [2020-10-28 10:18:47,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:18:47" (1/1) ... [2020-10-28 10:18:47,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:18:47,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:18:48,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:18:48,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:18:48,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:18:48,451 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:18:48,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48 WrapperNode [2020-10-28 10:18:48,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:18:48,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:18:48,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:18:48,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:18:48,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... [2020-10-28 10:18:48,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:18:48,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:18:48,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:18:48,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:18:48,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:18:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:18:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:18:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:18:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:18:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:18:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:18:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:18:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:18:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:18:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:18:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:18:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:18:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:18:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:18:51,305 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:18:51,306 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:18:51,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:18:51 BoogieIcfgContainer [2020-10-28 10:18:51,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:18:51,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:18:51,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:18:51,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:18:51,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:18:47" (1/3) ... [2020-10-28 10:18:51,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b56bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:18:51, skipping insertion in model container [2020-10-28 10:18:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:48" (2/3) ... [2020-10-28 10:18:51,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b56bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:18:51, skipping insertion in model container [2020-10-28 10:18:51,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:18:51" (3/3) ... [2020-10-28 10:18:51,324 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2020-10-28 10:18:51,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:18:51,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:18:51,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:18:51,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:18:51,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:18:51,409 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:18:51,410 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:18:51,410 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:18:51,410 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:18:51,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:18:51,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:18:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:18:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 10:18:51,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:51,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:51,473 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1235881672, now seen corresponding path program 1 times [2020-10-28 10:18:51,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:51,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615939085] [2020-10-28 10:18:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:55,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 10:18:55,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:55,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3994 [2020-10-28 10:18:55,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:55,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:18:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 10:18:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:18:56,397 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:56,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:18:56,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:56,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:18:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:18:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:56,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615939085] [2020-10-28 10:18:56,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:18:56,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:18:56,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936196973] [2020-10-28 10:18:56,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:18:56,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:18:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:18:56,595 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:18:56,957 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:00,606 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-28 10:19:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:00,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 10:19:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:00,643 INFO L225 Difference]: With dead ends: 889 [2020-10-28 10:19:00,643 INFO L226 Difference]: Without dead ends: 481 [2020-10-28 10:19:00,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-28 10:19:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-28 10:19:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-28 10:19:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-28 10:19:00,775 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 154 [2020-10-28 10:19:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:00,776 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-28 10:19:00,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:19:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-28 10:19:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 10:19:00,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:00,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:00,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:19:00,801 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash 257579049, now seen corresponding path program 1 times [2020-10-28 10:19:00,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:00,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137411626] [2020-10-28 10:19:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:00,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 10:19:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3671 [2020-10-28 10:19:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:04,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:19:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 10:19:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:05,005 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:05,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:05,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:19:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:05,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 10:19:05,181 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:19:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:05,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:19:05,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:19:05,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:05,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:19:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:05,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137411626] [2020-10-28 10:19:05,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:05,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:05,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468324074] [2020-10-28 10:19:05,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:05,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:05,322 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-28 10:19:05,695 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:09,067 INFO L93 Difference]: Finished difference Result 1382 states and 2143 transitions. [2020-10-28 10:19:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:09,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 10:19:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:09,077 INFO L225 Difference]: With dead ends: 1382 [2020-10-28 10:19:09,077 INFO L226 Difference]: Without dead ends: 912 [2020-10-28 10:19:09,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-28 10:19:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 905. [2020-10-28 10:19:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-28 10:19:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1322 transitions. [2020-10-28 10:19:09,137 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1322 transitions. Word has length 163 [2020-10-28 10:19:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:09,139 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1322 transitions. [2020-10-28 10:19:09,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1322 transitions. [2020-10-28 10:19:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 10:19:09,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:09,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:09,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:19:09,149 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:09,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:09,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1617841963, now seen corresponding path program 1 times [2020-10-28 10:19:09,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:09,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035573929] [2020-10-28 10:19:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 10:19:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 10:19:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 10:19:14,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:14,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 10:19:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 10:19:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:14,619 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:14,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:14,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:19:14,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:14,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:14,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:19:14,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:19:14,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:14,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:14,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:19:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:14,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:19:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:19:14,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:14,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:19:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:19:14,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035573929] [2020-10-28 10:19:14,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:14,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:14,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328598003] [2020-10-28 10:19:14,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:14,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:14,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:14,894 INFO L87 Difference]: Start difference. First operand 905 states and 1322 transitions. Second operand 5 states. [2020-10-28 10:19:15,382 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:18,615 INFO L93 Difference]: Finished difference Result 2650 states and 3902 transitions. [2020-10-28 10:19:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:18,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 10:19:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:18,623 INFO L225 Difference]: With dead ends: 2650 [2020-10-28 10:19:18,624 INFO L226 Difference]: Without dead ends: 908 [2020-10-28 10:19:18,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-28 10:19:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 904. [2020-10-28 10:19:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-28 10:19:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1320 transitions. [2020-10-28 10:19:18,674 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1320 transitions. Word has length 173 [2020-10-28 10:19:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:18,674 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1320 transitions. [2020-10-28 10:19:18,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1320 transitions. [2020-10-28 10:19:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 10:19:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:18,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:18,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:19:18,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -354758389, now seen corresponding path program 1 times [2020-10-28 10:19:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:18,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75072672] [2020-10-28 10:19:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 10:19:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-10-28 10:19:20,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:19:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 10:19:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:19:21,052 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:21,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:19:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:19:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:21,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75072672] [2020-10-28 10:19:21,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:21,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:21,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860181206] [2020-10-28 10:19:21,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:21,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:21,305 INFO L87 Difference]: Start difference. First operand 904 states and 1320 transitions. Second operand 5 states. [2020-10-28 10:19:21,699 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:25,007 INFO L93 Difference]: Finished difference Result 2645 states and 3929 transitions. [2020-10-28 10:19:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:25,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 10:19:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:25,021 INFO L225 Difference]: With dead ends: 2645 [2020-10-28 10:19:25,021 INFO L226 Difference]: Without dead ends: 1747 [2020-10-28 10:19:25,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-28 10:19:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1740. [2020-10-28 10:19:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-10-28 10:19:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2511 transitions. [2020-10-28 10:19:25,105 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2511 transitions. Word has length 172 [2020-10-28 10:19:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:25,107 INFO L481 AbstractCegarLoop]: Abstraction has 1740 states and 2511 transitions. [2020-10-28 10:19:25,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2511 transitions. [2020-10-28 10:19:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 10:19:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:25,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:25,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:19:25,115 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash 49133640, now seen corresponding path program 1 times [2020-10-28 10:19:25,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:25,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557498888] [2020-10-28 10:19:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 10:19:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:19:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 10:19:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:19:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-28 10:19:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 10:19:30,566 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:19:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:19:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:30,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:19:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:19:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:19:30,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557498888] [2020-10-28 10:19:30,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:30,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:19:30,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674590283] [2020-10-28 10:19:30,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:19:30,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:30,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:19:30,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:30,969 INFO L87 Difference]: Start difference. First operand 1740 states and 2511 transitions. Second operand 6 states. [2020-10-28 10:19:31,312 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:34,521 INFO L93 Difference]: Finished difference Result 4365 states and 6569 transitions. [2020-10-28 10:19:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 10:19:34,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-10-28 10:19:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:34,542 INFO L225 Difference]: With dead ends: 4365 [2020-10-28 10:19:34,543 INFO L226 Difference]: Without dead ends: 2631 [2020-10-28 10:19:34,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2020-10-28 10:19:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2592. [2020-10-28 10:19:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2020-10-28 10:19:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3573 transitions. [2020-10-28 10:19:34,659 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3573 transitions. Word has length 180 [2020-10-28 10:19:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:34,659 INFO L481 AbstractCegarLoop]: Abstraction has 2592 states and 3573 transitions. [2020-10-28 10:19:34,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:19:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3573 transitions. [2020-10-28 10:19:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 10:19:34,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:34,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:34,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:19:34,668 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1017556512, now seen corresponding path program 1 times [2020-10-28 10:19:34,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:34,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343743908] [2020-10-28 10:19:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:36,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 10:19:36,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 10:19:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:36,954 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:37,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:19:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:19:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:19:37,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 10:19:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:19:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:19:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343743908] [2020-10-28 10:19:37,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:37,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079522053] [2020-10-28 10:19:37,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:19:37,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:19:37,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:37,599 INFO L87 Difference]: Start difference. First operand 2592 states and 3573 transitions. Second operand 6 states. [2020-10-28 10:19:37,865 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:41,333 INFO L93 Difference]: Finished difference Result 7854 states and 11441 transitions. [2020-10-28 10:19:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:19:41,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-10-28 10:19:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:41,371 INFO L225 Difference]: With dead ends: 7854 [2020-10-28 10:19:41,371 INFO L226 Difference]: Without dead ends: 5268 [2020-10-28 10:19:41,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:19:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2020-10-28 10:19:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5215. [2020-10-28 10:19:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-10-28 10:19:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7062 transitions. [2020-10-28 10:19:41,594 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7062 transitions. Word has length 190 [2020-10-28 10:19:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:41,594 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 7062 transitions. [2020-10-28 10:19:41,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:19:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7062 transitions. [2020-10-28 10:19:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-28 10:19:41,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:41,611 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:41,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:19:41,611 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1232780479, now seen corresponding path program 1 times [2020-10-28 10:19:41,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:41,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303105298] [2020-10-28 10:19:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 10:19:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3177 [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:19:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:45,091 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:45,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:45,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:19:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:19:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:19:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:45,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:19:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:19:45,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303105298] [2020-10-28 10:19:45,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:45,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:19:45,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702794706] [2020-10-28 10:19:45,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:19:45,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:45,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:19:45,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:19:45,466 INFO L87 Difference]: Start difference. First operand 5215 states and 7062 transitions. Second operand 8 states. [2020-10-28 10:19:45,745 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:46,575 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:49,816 INFO L93 Difference]: Finished difference Result 10606 states and 14889 transitions. [2020-10-28 10:19:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:19:49,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-28 10:19:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:49,850 INFO L225 Difference]: With dead ends: 10606 [2020-10-28 10:19:49,850 INFO L226 Difference]: Without dead ends: 5397 [2020-10-28 10:19:49,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:19:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2020-10-28 10:19:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 5337. [2020-10-28 10:19:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5337 states. [2020-10-28 10:19:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 6941 transitions. [2020-10-28 10:19:50,047 INFO L78 Accepts]: Start accepts. Automaton has 5337 states and 6941 transitions. Word has length 207 [2020-10-28 10:19:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:50,048 INFO L481 AbstractCegarLoop]: Abstraction has 5337 states and 6941 transitions. [2020-10-28 10:19:50,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:19:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5337 states and 6941 transitions. [2020-10-28 10:19:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 10:19:50,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:50,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:50,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:19:50,067 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1032509993, now seen corresponding path program 1 times [2020-10-28 10:19:50,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:50,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975175667] [2020-10-28 10:19:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 10:19:54,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4391 [2020-10-28 10:19:54,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 10:19:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 10:19:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:54,922 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:54,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:55,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:55,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:55,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:55,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:55,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:19:55,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:55,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:55,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:19:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:55,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:19:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:19:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:19:55,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975175667] [2020-10-28 10:19:55,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:55,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:55,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582988068] [2020-10-28 10:19:55,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:55,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:55,221 INFO L87 Difference]: Start difference. First operand 5337 states and 6941 transitions. Second operand 5 states. [2020-10-28 10:19:55,554 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:59,292 INFO L93 Difference]: Finished difference Result 15380 states and 20482 transitions. [2020-10-28 10:19:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:59,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-28 10:19:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:59,346 INFO L225 Difference]: With dead ends: 15380 [2020-10-28 10:19:59,346 INFO L226 Difference]: Without dead ends: 10049 [2020-10-28 10:19:59,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10049 states. [2020-10-28 10:19:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10049 to 9173. [2020-10-28 10:19:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9173 states. [2020-10-28 10:19:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9173 states to 9173 states and 12257 transitions. [2020-10-28 10:19:59,705 INFO L78 Accepts]: Start accepts. Automaton has 9173 states and 12257 transitions. Word has length 216 [2020-10-28 10:19:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:59,706 INFO L481 AbstractCegarLoop]: Abstraction has 9173 states and 12257 transitions. [2020-10-28 10:19:59,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9173 states and 12257 transitions. [2020-10-28 10:19:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 10:19:59,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:59,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:59,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:19:59,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2034416498, now seen corresponding path program 1 times [2020-10-28 10:19:59,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:59,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015024881] [2020-10-28 10:19:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:04,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 10:20:04,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:20:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 10:20:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:04,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:20:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:20:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:05,189 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:05,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:05,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:20:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:20:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:05,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:20:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:20:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:05,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:20:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:20:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:20:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:20:05,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015024881] [2020-10-28 10:20:05,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:05,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:05,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470550837] [2020-10-28 10:20:05,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:05,807 INFO L87 Difference]: Start difference. First operand 9173 states and 12257 transitions. Second operand 7 states. [2020-10-28 10:20:06,218 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:06,469 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:11,843 INFO L93 Difference]: Finished difference Result 22848 states and 32265 transitions. [2020-10-28 10:20:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:20:11,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-28 10:20:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:11,924 INFO L225 Difference]: With dead ends: 22848 [2020-10-28 10:20:11,925 INFO L226 Difference]: Without dead ends: 13681 [2020-10-28 10:20:11,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:20:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2020-10-28 10:20:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 13280. [2020-10-28 10:20:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13280 states. [2020-10-28 10:20:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13280 states to 13280 states and 17380 transitions. [2020-10-28 10:20:12,506 INFO L78 Accepts]: Start accepts. Automaton has 13280 states and 17380 transitions. Word has length 236 [2020-10-28 10:20:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:12,507 INFO L481 AbstractCegarLoop]: Abstraction has 13280 states and 17380 transitions. [2020-10-28 10:20:12,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 13280 states and 17380 transitions. [2020-10-28 10:20:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 10:20:12,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:12,552 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:12,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:20:12,552 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:12,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash 776952702, now seen corresponding path program 1 times [2020-10-28 10:20:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450466236] [2020-10-28 10:20:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 10:20:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:20:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 10:20:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:18,036 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:18,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:20:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:18,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:20:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:20:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-28 10:20:18,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450466236] [2020-10-28 10:20:18,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:18,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:20:18,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988307183] [2020-10-28 10:20:18,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:20:18,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:20:18,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:20:18,344 INFO L87 Difference]: Start difference. First operand 13280 states and 17380 transitions. Second operand 6 states. [2020-10-28 10:20:18,596 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:19,578 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:23,492 INFO L93 Difference]: Finished difference Result 40547 states and 53278 transitions. [2020-10-28 10:20:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:20:23,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2020-10-28 10:20:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:23,636 INFO L225 Difference]: With dead ends: 40547 [2020-10-28 10:20:23,636 INFO L226 Difference]: Without dead ends: 31563 [2020-10-28 10:20:23,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:20:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31563 states. [2020-10-28 10:20:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31563 to 29594. [2020-10-28 10:20:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29594 states. [2020-10-28 10:20:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29594 states to 29594 states and 39083 transitions. [2020-10-28 10:20:24,857 INFO L78 Accepts]: Start accepts. Automaton has 29594 states and 39083 transitions. Word has length 237 [2020-10-28 10:20:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:24,858 INFO L481 AbstractCegarLoop]: Abstraction has 29594 states and 39083 transitions. [2020-10-28 10:20:24,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:20:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29594 states and 39083 transitions. [2020-10-28 10:20:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 10:20:24,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:24,956 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:24,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:20:24,956 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1524823258, now seen corresponding path program 1 times [2020-10-28 10:20:24,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:24,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365401105] [2020-10-28 10:20:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 10:20:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 10:20:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,371 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:20:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:20:30,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 10:20:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:20:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 10:20:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:20:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 151 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:20:31,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365401105] [2020-10-28 10:20:31,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:31,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:20:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340415184] [2020-10-28 10:20:31,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:20:31,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:20:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:20:31,190 INFO L87 Difference]: Start difference. First operand 29594 states and 39083 transitions. Second operand 8 states. [2020-10-28 10:20:31,478 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:32,396 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:20:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:36,846 INFO L93 Difference]: Finished difference Result 66253 states and 88993 transitions. [2020-10-28 10:20:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 10:20:36,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-28 10:20:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:37,015 INFO L225 Difference]: With dead ends: 66253 [2020-10-28 10:20:37,016 INFO L226 Difference]: Without dead ends: 36665 [2020-10-28 10:20:37,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:20:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36665 states. [2020-10-28 10:20:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36665 to 36410. [2020-10-28 10:20:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36410 states. [2020-10-28 10:20:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36410 states to 36410 states and 47796 transitions. [2020-10-28 10:20:38,444 INFO L78 Accepts]: Start accepts. Automaton has 36410 states and 47796 transitions. Word has length 256 [2020-10-28 10:20:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:38,444 INFO L481 AbstractCegarLoop]: Abstraction has 36410 states and 47796 transitions. [2020-10-28 10:20:38,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:20:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 36410 states and 47796 transitions. [2020-10-28 10:20:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-28 10:20:38,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:38,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:38,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:20:38,534 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1148140046, now seen corresponding path program 1 times [2020-10-28 10:20:38,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:38,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714859729] [2020-10-28 10:20:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:43,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:43,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:20:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 10:20:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:43,955 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:43,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:43,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:20:43,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 10:20:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 10:20:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:20:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 10:20:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:20:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 104 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 10:20:44,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714859729] [2020-10-28 10:20:44,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:44,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:44,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493230598] [2020-10-28 10:20:44,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:44,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:44,676 INFO L87 Difference]: Start difference. First operand 36410 states and 47796 transitions. Second operand 7 states. [2020-10-28 10:20:44,974 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:45,801 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:20:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:48,973 INFO L93 Difference]: Finished difference Result 70379 states and 92046 transitions. [2020-10-28 10:20:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:20:48,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-28 10:20:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:49,150 INFO L225 Difference]: With dead ends: 70379 [2020-10-28 10:20:49,150 INFO L226 Difference]: Without dead ends: 44955 [2020-10-28 10:20:49,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:20:49,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44955 states. [2020-10-28 10:20:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44955 to 44616. [2020-10-28 10:20:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44616 states. [2020-10-28 10:20:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44616 states to 44616 states and 58253 transitions. [2020-10-28 10:20:50,641 INFO L78 Accepts]: Start accepts. Automaton has 44616 states and 58253 transitions. Word has length 267 [2020-10-28 10:20:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:50,642 INFO L481 AbstractCegarLoop]: Abstraction has 44616 states and 58253 transitions. [2020-10-28 10:20:50,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 44616 states and 58253 transitions. [2020-10-28 10:20:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-28 10:20:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:50,715 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:50,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:20:50,716 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1365863071, now seen corresponding path program 1 times [2020-10-28 10:20:50,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:50,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671898851] [2020-10-28 10:20:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:55,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:55,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-28 10:20:55,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 10:20:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:20:55,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,082 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:20:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 10:20:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 10:20:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:20:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 10:20:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:20:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 10:20:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:20:56,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 176 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-28 10:20:56,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671898851] [2020-10-28 10:20:56,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:56,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:56,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568819648] [2020-10-28 10:20:56,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:56,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:56,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:56,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:56,595 INFO L87 Difference]: Start difference. First operand 44616 states and 58253 transitions. Second operand 7 states. [2020-10-28 10:20:57,059 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:57,680 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:21:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:03,230 INFO L93 Difference]: Finished difference Result 84338 states and 114004 transitions. [2020-10-28 10:21:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:03,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-28 10:21:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:03,440 INFO L225 Difference]: With dead ends: 84338 [2020-10-28 10:21:03,441 INFO L226 Difference]: Without dead ends: 43488 [2020-10-28 10:21:03,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43488 states. [2020-10-28 10:21:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43488 to 42563. [2020-10-28 10:21:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42563 states. [2020-10-28 10:21:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42563 states to 42563 states and 53802 transitions. [2020-10-28 10:21:04,885 INFO L78 Accepts]: Start accepts. Automaton has 42563 states and 53802 transitions. Word has length 284 [2020-10-28 10:21:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:04,885 INFO L481 AbstractCegarLoop]: Abstraction has 42563 states and 53802 transitions. [2020-10-28 10:21:04,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 42563 states and 53802 transitions. [2020-10-28 10:21:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 10:21:04,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:04,944 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:04,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:21:04,944 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1469702069, now seen corresponding path program 1 times [2020-10-28 10:21:04,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:04,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340890307] [2020-10-28 10:21:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:21:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:21:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,298 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:21:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:21:10,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:21:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:21:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:21:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 10:21:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 10:21:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:21:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:21:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:10,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:21:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 10:21:10,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340890307] [2020-10-28 10:21:10,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:10,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547941215] [2020-10-28 10:21:10,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:10,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:10,871 INFO L87 Difference]: Start difference. First operand 42563 states and 53802 transitions. Second operand 7 states. [2020-10-28 10:21:11,152 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:21:11,891 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:21:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:17,222 INFO L93 Difference]: Finished difference Result 99508 states and 130959 transitions. [2020-10-28 10:21:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:17,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-28 10:21:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:17,621 INFO L225 Difference]: With dead ends: 99508 [2020-10-28 10:21:17,621 INFO L226 Difference]: Without dead ends: 58207 [2020-10-28 10:21:17,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58207 states. [2020-10-28 10:21:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58207 to 57013. [2020-10-28 10:21:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57013 states. [2020-10-28 10:21:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57013 states to 57013 states and 71684 transitions. [2020-10-28 10:21:20,003 INFO L78 Accepts]: Start accepts. Automaton has 57013 states and 71684 transitions. Word has length 286 [2020-10-28 10:21:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:20,003 INFO L481 AbstractCegarLoop]: Abstraction has 57013 states and 71684 transitions. [2020-10-28 10:21:20,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 57013 states and 71684 transitions. [2020-10-28 10:21:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-28 10:21:20,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:20,085 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:20,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:21:20,085 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1504676458, now seen corresponding path program 1 times [2020-10-28 10:21:20,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:20,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562411885] [2020-10-28 10:21:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:21:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:21:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,438 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:21:25,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:21:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:21:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:21:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:21:25,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:21:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 10:21:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 10:21:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:21:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 10:21:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:25,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 150 proven. 80 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 10:21:25,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562411885] [2020-10-28 10:21:25,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:25,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:25,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540835110] [2020-10-28 10:21:25,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:25,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:25,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:25,968 INFO L87 Difference]: Start difference. First operand 57013 states and 71684 transitions. Second operand 7 states. [2020-10-28 10:21:26,373 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:21:27,533 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:21:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:31,493 INFO L93 Difference]: Finished difference Result 107274 states and 141378 transitions. [2020-10-28 10:21:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:31,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-28 10:21:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:31,891 INFO L225 Difference]: With dead ends: 107274 [2020-10-28 10:21:31,891 INFO L226 Difference]: Without dead ends: 66359 [2020-10-28 10:21:31,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66359 states. [2020-10-28 10:21:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66359 to 65107. [2020-10-28 10:21:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65107 states. [2020-10-28 10:21:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65107 states to 65107 states and 80285 transitions. [2020-10-28 10:21:34,160 INFO L78 Accepts]: Start accepts. Automaton has 65107 states and 80285 transitions. Word has length 298 [2020-10-28 10:21:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:34,160 INFO L481 AbstractCegarLoop]: Abstraction has 65107 states and 80285 transitions. [2020-10-28 10:21:34,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 65107 states and 80285 transitions. [2020-10-28 10:21:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-28 10:21:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:34,229 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:34,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:21:34,230 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1941251515, now seen corresponding path program 1 times [2020-10-28 10:21:34,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:34,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627801840] [2020-10-28 10:21:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:21:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 10:21:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:39,651 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:21:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:21:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:21:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:39,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:21:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 10:21:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:21:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 10:21:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:40,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 10:21:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 149 proven. 93 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-28 10:21:40,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627801840] [2020-10-28 10:21:40,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:40,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:40,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489977908] [2020-10-28 10:21:40,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:40,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:40,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:40,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:40,180 INFO L87 Difference]: Start difference. First operand 65107 states and 80285 transitions. Second operand 7 states. [2020-10-28 10:21:40,486 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:21:41,868 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:21:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:45,662 INFO L93 Difference]: Finished difference Result 151261 states and 188483 transitions. [2020-10-28 10:21:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:45,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-28 10:21:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:46,101 INFO L225 Difference]: With dead ends: 151261 [2020-10-28 10:21:46,101 INFO L226 Difference]: Without dead ends: 94885 [2020-10-28 10:21:46,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94885 states. [2020-10-28 10:21:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94885 to 94568. [2020-10-28 10:21:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94568 states. [2020-10-28 10:21:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94568 states to 94568 states and 117446 transitions. [2020-10-28 10:21:49,355 INFO L78 Accepts]: Start accepts. Automaton has 94568 states and 117446 transitions. Word has length 318 [2020-10-28 10:21:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:49,356 INFO L481 AbstractCegarLoop]: Abstraction has 94568 states and 117446 transitions. [2020-10-28 10:21:49,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 94568 states and 117446 transitions. [2020-10-28 10:21:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 10:21:49,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:49,435 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:49,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:21:49,435 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2048651604, now seen corresponding path program 1 times [2020-10-28 10:21:49,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:49,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154172204] [2020-10-28 10:21:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:54,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 10:21:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 10:21:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:54,864 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:54,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:55,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:55,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 10:21:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:21:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:21:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:21:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:55,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 10:21:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:55,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:21:55,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 10:21:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 197 proven. 30 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-28 10:21:55,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154172204] [2020-10-28 10:21:55,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:55,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:55,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145213192] [2020-10-28 10:21:55,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:55,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:55,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:55,485 INFO L87 Difference]: Start difference. First operand 94568 states and 117446 transitions. Second operand 7 states. [2020-10-28 10:21:55,762 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:21:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:59,008 INFO L93 Difference]: Finished difference Result 156632 states and 194413 transitions. [2020-10-28 10:21:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 10:21:59,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-28 10:21:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:59,324 INFO L225 Difference]: With dead ends: 156632 [2020-10-28 10:21:59,324 INFO L226 Difference]: Without dead ends: 70710 [2020-10-28 10:21:59,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:21:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70710 states. [2020-10-28 10:22:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70710 to 69577. [2020-10-28 10:22:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69577 states. [2020-10-28 10:22:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69577 states to 69577 states and 85193 transitions. [2020-10-28 10:22:01,632 INFO L78 Accepts]: Start accepts. Automaton has 69577 states and 85193 transitions. Word has length 341 [2020-10-28 10:22:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:01,632 INFO L481 AbstractCegarLoop]: Abstraction has 69577 states and 85193 transitions. [2020-10-28 10:22:01,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:22:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 69577 states and 85193 transitions. [2020-10-28 10:22:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-28 10:22:01,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:01,696 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:01,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 10:22:01,697 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash -464972304, now seen corresponding path program 1 times [2020-10-28 10:22:01,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:01,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273445390] [2020-10-28 10:22:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking...