/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem11_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:50:00,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:50:00,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:50:00,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:50:00,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:50:00,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:50:00,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:50:00,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:50:00,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:50:00,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:50:00,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:50:00,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:50:00,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:50:00,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:50:00,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:50:00,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:50:00,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:50:00,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:50:00,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:50:00,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:50:00,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:50:00,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:50:00,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:50:00,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:50:00,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:50:00,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:50:00,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:50:00,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:50:00,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:50:00,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:50:00,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:50:00,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:50:00,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:50:00,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:50:00,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:50:00,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:50:00,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:50:00,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:50:00,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:50:00,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:50:00,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:50:00,448 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 [2020-10-29 06:50:00,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:50:00,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:50:00,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:50:00,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:50:00,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:50:00,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:50:00,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:50:00,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:50:00,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:50:00,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:50:00,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:50:00,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:50:00,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:50:00,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:50:00,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:50:00,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:50:00,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:50:00,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:50:00,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:50:00,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:50:00,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:50:00,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:00,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:50:00,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:50:00,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:50:00,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:50:00,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:50:00,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:50:00,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:50:00,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:50:00,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:50:01,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:50:01,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:50:01,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:50:01,033 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:50:01,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-29 06:50:01,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d0c3b5/e739e84377a5475999a33922d6bc1726/FLAG75f8a76e9 [2020-10-29 06:50:01,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:50:01,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-29 06:50:01,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d0c3b5/e739e84377a5475999a33922d6bc1726/FLAG75f8a76e9 [2020-10-29 06:50:02,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d0c3b5/e739e84377a5475999a33922d6bc1726 [2020-10-29 06:50:02,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:50:02,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:50:02,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:02,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:50:02,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:50:02,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:02" (1/1) ... [2020-10-29 06:50:02,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192283d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:02, skipping insertion in model container [2020-10-29 06:50:02,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:02" (1/1) ... [2020-10-29 06:50:02,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:50:02,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:50:02,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:02,907 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:50:03,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:03,100 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:50:03,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03 WrapperNode [2020-10-29 06:50:03,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:03,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:50:03,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:50:03,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:50:03,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (1/1) ... [2020-10-29 06:50:03,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:50:03,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:50:03,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:50:03,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:50:03,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (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 [2020-10-29 06:50:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:50:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:50:03,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:50:03,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:50:03,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:50:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:50:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:50:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:50:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:50:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:50:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:50:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:50:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:50:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:50:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:50:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:50:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:50:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:50:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:50:05,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:50:05,638 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:50:05,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:05 BoogieIcfgContainer [2020-10-29 06:50:05,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:50:05,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:50:05,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:50:05,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:50:05,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:50:02" (1/3) ... [2020-10-29 06:50:05,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51573866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:05, skipping insertion in model container [2020-10-29 06:50:05,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:03" (2/3) ... [2020-10-29 06:50:05,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51573866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:05, skipping insertion in model container [2020-10-29 06:50:05,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:05" (3/3) ... [2020-10-29 06:50:05,651 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2020-10-29 06:50:05,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:50:05,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:50:05,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:50:05,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:50:05,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:50:05,719 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:50:05,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:50:05,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:50:05,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:50:05,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:50:05,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:50:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:50:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 06:50:05,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:05,755 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] [2020-10-29 06:50:05,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:05,762 INFO L82 PathProgramCache]: Analyzing trace with hash -897718050, now seen corresponding path program 1 times [2020-10-29 06:50:05,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:05,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836670742] [2020-10-29 06:50:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:06,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:06,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 06:50:06,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:06,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 06:50:06,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:06,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 06:50:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:50:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:50:06,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:06,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:06,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836670742] [2020-10-29 06:50:06,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:06,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:50:06,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2409716] [2020-10-29 06:50:06,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:50:06,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:50:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:50:06,993 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:50:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:10,510 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-29 06:50:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:10,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-29 06:50:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:10,547 INFO L225 Difference]: With dead ends: 796 [2020-10-29 06:50:10,548 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 06:50:10,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 06:50:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-29 06:50:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 06:50:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-29 06:50:10,670 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 39 [2020-10-29 06:50:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:10,677 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-29 06:50:10,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:50:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-29 06:50:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 06:50:10,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:10,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:10,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:50:10,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash 448944579, now seen corresponding path program 1 times [2020-10-29 06:50:10,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:10,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344858702] [2020-10-29 06:50:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:12,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 06:50:12,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-10-29 06:50:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:12,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:50:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:12,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:12,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:50:12,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:12,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:50:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 06:50:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:50:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:13,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344858702] [2020-10-29 06:50:13,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:13,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:50:13,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049844585] [2020-10-29 06:50:13,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:50:13,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:50:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:50:13,163 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 8 states. [2020-10-29 06:50:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:17,914 INFO L93 Difference]: Finished difference Result 1666 states and 2473 transitions. [2020-10-29 06:50:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:50:17,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-29 06:50:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:17,929 INFO L225 Difference]: With dead ends: 1666 [2020-10-29 06:50:17,929 INFO L226 Difference]: Without dead ends: 1241 [2020-10-29 06:50:17,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:50:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-29 06:50:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1209. [2020-10-29 06:50:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-29 06:50:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1691 transitions. [2020-10-29 06:50:18,028 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1691 transitions. Word has length 111 [2020-10-29 06:50:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:18,029 INFO L481 AbstractCegarLoop]: Abstraction has 1209 states and 1691 transitions. [2020-10-29 06:50:18,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:50:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1691 transitions. [2020-10-29 06:50:18,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 06:50:18,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:18,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:18,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:50:18,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash 46074433, now seen corresponding path program 1 times [2020-10-29 06:50:18,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:18,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347495068] [2020-10-29 06:50:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 06:50:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1706 [2020-10-29 06:50:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:19,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:50:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:19,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:19,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 06:50:19,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:19,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:19,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:20,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:50:20,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 06:50:20,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:20,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:50:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:20,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347495068] [2020-10-29 06:50:20,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:20,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:50:20,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550155850] [2020-10-29 06:50:20,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:20,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:20,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:20,354 INFO L87 Difference]: Start difference. First operand 1209 states and 1691 transitions. Second operand 7 states. [2020-10-29 06:50:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:23,449 INFO L93 Difference]: Finished difference Result 3042 states and 4226 transitions. [2020-10-29 06:50:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:50:23,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-29 06:50:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:23,465 INFO L225 Difference]: With dead ends: 3042 [2020-10-29 06:50:23,465 INFO L226 Difference]: Without dead ends: 1839 [2020-10-29 06:50:23,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:50:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-10-29 06:50:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2020-10-29 06:50:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-10-29 06:50:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2365 transitions. [2020-10-29 06:50:23,602 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2365 transitions. Word has length 112 [2020-10-29 06:50:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:23,605 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2365 transitions. [2020-10-29 06:50:23,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2365 transitions. [2020-10-29 06:50:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 06:50:23,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:23,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:23,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:50:23,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:23,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1210990262, now seen corresponding path program 1 times [2020-10-29 06:50:23,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:23,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393486691] [2020-10-29 06:50:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 06:50:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-29 06:50:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:24,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:50:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 06:50:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:24,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:24,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:50:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:24,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:50:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:24,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:50:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:24,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393486691] [2020-10-29 06:50:24,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:24,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:50:24,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735525888] [2020-10-29 06:50:24,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:50:24,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:24,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:50:24,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:24,609 INFO L87 Difference]: Start difference. First operand 1809 states and 2365 transitions. Second operand 6 states. [2020-10-29 06:50:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:28,366 INFO L93 Difference]: Finished difference Result 4423 states and 5951 transitions. [2020-10-29 06:50:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:50:28,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-29 06:50:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:28,385 INFO L225 Difference]: With dead ends: 4423 [2020-10-29 06:50:28,385 INFO L226 Difference]: Without dead ends: 2808 [2020-10-29 06:50:28,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:50:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-10-29 06:50:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2396. [2020-10-29 06:50:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2020-10-29 06:50:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3157 transitions. [2020-10-29 06:50:28,502 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3157 transitions. Word has length 170 [2020-10-29 06:50:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:28,503 INFO L481 AbstractCegarLoop]: Abstraction has 2396 states and 3157 transitions. [2020-10-29 06:50:28,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:50:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3157 transitions. [2020-10-29 06:50:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 06:50:28,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:28,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:28,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:50:28,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1097255046, now seen corresponding path program 1 times [2020-10-29 06:50:28,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:28,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602200888] [2020-10-29 06:50:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 06:50:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-29 06:50:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:30,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:50:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-29 06:50:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:30,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:30,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:50:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:30,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:31,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:50:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:50:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 06:50:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:31,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:50:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:50:32,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602200888] [2020-10-29 06:50:32,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:32,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:50:32,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696789939] [2020-10-29 06:50:32,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:50:32,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:50:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:50:32,057 INFO L87 Difference]: Start difference. First operand 2396 states and 3157 transitions. Second operand 9 states. [2020-10-29 06:50:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:37,123 INFO L93 Difference]: Finished difference Result 6743 states and 10125 transitions. [2020-10-29 06:50:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:50:37,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2020-10-29 06:50:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:37,165 INFO L225 Difference]: With dead ends: 6743 [2020-10-29 06:50:37,165 INFO L226 Difference]: Without dead ends: 4541 [2020-10-29 06:50:37,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:50:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-10-29 06:50:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4415. [2020-10-29 06:50:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2020-10-29 06:50:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5765 transitions. [2020-10-29 06:50:37,373 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5765 transitions. Word has length 249 [2020-10-29 06:50:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:37,374 INFO L481 AbstractCegarLoop]: Abstraction has 4415 states and 5765 transitions. [2020-10-29 06:50:37,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:50:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5765 transitions. [2020-10-29 06:50:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 06:50:37,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:37,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:37,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:50:37,385 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1798066313, now seen corresponding path program 1 times [2020-10-29 06:50:37,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:37,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843057816] [2020-10-29 06:50:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 06:50:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:50:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 06:50:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:50:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:50:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:50:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:42,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:42,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:42,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:50:42,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:42,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:42,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:43,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:50:43,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:50:43,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:43,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:50:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 06:50:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:50:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:50:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:43,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 06:50:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 168 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 06:50:43,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843057816] [2020-10-29 06:50:43,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:43,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:43,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912768803] [2020-10-29 06:50:43,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:43,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:43,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:43,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:43,583 INFO L87 Difference]: Start difference. First operand 4415 states and 5765 transitions. Second operand 7 states. [2020-10-29 06:50:45,499 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 06:50:47,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:47,278 INFO L93 Difference]: Finished difference Result 10819 states and 14603 transitions. [2020-10-29 06:50:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:50:47,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-29 06:50:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:47,317 INFO L225 Difference]: With dead ends: 10819 [2020-10-29 06:50:47,317 INFO L226 Difference]: Without dead ends: 6598 [2020-10-29 06:50:47,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:50:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2020-10-29 06:50:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 6363. [2020-10-29 06:50:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2020-10-29 06:50:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 8114 transitions. [2020-10-29 06:50:47,530 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 8114 transitions. Word has length 300 [2020-10-29 06:50:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:47,531 INFO L481 AbstractCegarLoop]: Abstraction has 6363 states and 8114 transitions. [2020-10-29 06:50:47,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 8114 transitions. [2020-10-29 06:50:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 06:50:47,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:47,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:47,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:50:47,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:47,543 INFO L82 PathProgramCache]: Analyzing trace with hash -856760587, now seen corresponding path program 1 times [2020-10-29 06:50:47,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:47,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068578032] [2020-10-29 06:50:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:52,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:52,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-29 06:50:52,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:50:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 06:50:52,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:52,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 06:50:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 06:50:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:50:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:53,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:50:53,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:53,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:50:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:53,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:50:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:50:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:53,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:50:53,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:50:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:53,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:50:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 223 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:50:53,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068578032] [2020-10-29 06:50:53,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:53,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:50:53,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791057324] [2020-10-29 06:50:53,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:53,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:53,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:53,829 INFO L87 Difference]: Start difference. First operand 6363 states and 8114 transitions. Second operand 7 states. [2020-10-29 06:50:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:57,369 INFO L93 Difference]: Finished difference Result 12593 states and 17119 transitions. [2020-10-29 06:50:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:50:57,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-29 06:50:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:57,436 INFO L225 Difference]: With dead ends: 12593 [2020-10-29 06:50:57,436 INFO L226 Difference]: Without dead ends: 7793 [2020-10-29 06:50:57,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:50:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2020-10-29 06:50:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 7526. [2020-10-29 06:50:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7526 states. [2020-10-29 06:50:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 9579 transitions. [2020-10-29 06:50:57,711 INFO L78 Accepts]: Start accepts. Automaton has 7526 states and 9579 transitions. Word has length 310 [2020-10-29 06:50:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:57,712 INFO L481 AbstractCegarLoop]: Abstraction has 7526 states and 9579 transitions. [2020-10-29 06:50:57,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7526 states and 9579 transitions. [2020-10-29 06:50:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 06:50:57,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:57,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:57,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:50:57,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash 303316441, now seen corresponding path program 1 times [2020-10-29 06:50:57,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:57,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295841545] [2020-10-29 06:50:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 06:51:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2707 [2020-10-29 06:51:00,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:00,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:51:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:00,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:51:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:00,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:00,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:51:00,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:01,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:01,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:51:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:51:01,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295841545] [2020-10-29 06:51:01,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:01,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742167125] [2020-10-29 06:51:01,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:01,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:01,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:01,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:01,360 INFO L87 Difference]: Start difference. First operand 7526 states and 9579 transitions. Second operand 7 states. [2020-10-29 06:51:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:04,906 INFO L93 Difference]: Finished difference Result 16397 states and 21919 transitions. [2020-10-29 06:51:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:04,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-29 06:51:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:04,950 INFO L225 Difference]: With dead ends: 16397 [2020-10-29 06:51:04,951 INFO L226 Difference]: Without dead ends: 9255 [2020-10-29 06:51:04,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9255 states. [2020-10-29 06:51:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9255 to 8912. [2020-10-29 06:51:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8912 states. [2020-10-29 06:51:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8912 states to 8912 states and 11170 transitions. [2020-10-29 06:51:05,228 INFO L78 Accepts]: Start accepts. Automaton has 8912 states and 11170 transitions. Word has length 328 [2020-10-29 06:51:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:05,229 INFO L481 AbstractCegarLoop]: Abstraction has 8912 states and 11170 transitions. [2020-10-29 06:51:05,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8912 states and 11170 transitions. [2020-10-29 06:51:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-29 06:51:05,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:05,244 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:05,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:51:05,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash -138019309, now seen corresponding path program 1 times [2020-10-29 06:51:05,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:05,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119787099] [2020-10-29 06:51:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:51:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 06:51:10,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:10,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:10,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:10,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:51:10,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:10,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:10,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:10,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 06:51:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:51:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:51:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:51:11,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:51:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-29 06:51:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:11,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 06:51:11,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 95 proven. 232 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 06:51:12,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119787099] [2020-10-29 06:51:12,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:12,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:51:12,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227664413] [2020-10-29 06:51:12,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:51:12,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:51:12,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:51:12,558 INFO L87 Difference]: Start difference. First operand 8912 states and 11170 transitions. Second operand 11 states. [2020-10-29 06:51:13,599 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 06:51:14,982 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-29 06:51:15,790 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-29 06:51:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:17,796 INFO L93 Difference]: Finished difference Result 17502 states and 22101 transitions. [2020-10-29 06:51:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 06:51:17,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 332 [2020-10-29 06:51:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:17,829 INFO L225 Difference]: With dead ends: 17502 [2020-10-29 06:51:17,829 INFO L226 Difference]: Without dead ends: 8962 [2020-10-29 06:51:17,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2020-10-29 06:51:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8962 states. [2020-10-29 06:51:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8962 to 8723. [2020-10-29 06:51:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8723 states. [2020-10-29 06:51:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 10948 transitions. [2020-10-29 06:51:18,067 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 10948 transitions. Word has length 332 [2020-10-29 06:51:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:18,067 INFO L481 AbstractCegarLoop]: Abstraction has 8723 states and 10948 transitions. [2020-10-29 06:51:18,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:51:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 10948 transitions. [2020-10-29 06:51:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 06:51:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:18,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:51:18,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:51:18,086 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1537732279, now seen corresponding path program 1 times [2020-10-29 06:51:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188621140] [2020-10-29 06:51:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:19,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 06:51:19,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:51:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:19,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:19,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:51:19,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:19,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:19,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:51:19,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 06:51:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:19,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:51:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188621140] [2020-10-29 06:51:19,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:19,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:19,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019666801] [2020-10-29 06:51:20,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:20,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:20,001 INFO L87 Difference]: Start difference. First operand 8723 states and 10948 transitions. Second operand 7 states. [2020-10-29 06:51:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:24,455 INFO L93 Difference]: Finished difference Result 17204 states and 21607 transitions. [2020-10-29 06:51:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:51:24,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-29 06:51:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:24,489 INFO L225 Difference]: With dead ends: 17204 [2020-10-29 06:51:24,489 INFO L226 Difference]: Without dead ends: 8721 [2020-10-29 06:51:24,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:51:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8721 states. [2020-10-29 06:51:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8721 to 8707. [2020-10-29 06:51:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8707 states. [2020-10-29 06:51:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8707 states to 8707 states and 10788 transitions. [2020-10-29 06:51:24,697 INFO L78 Accepts]: Start accepts. Automaton has 8707 states and 10788 transitions. Word has length 333 [2020-10-29 06:51:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:24,698 INFO L481 AbstractCegarLoop]: Abstraction has 8707 states and 10788 transitions. [2020-10-29 06:51:24,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8707 states and 10788 transitions. [2020-10-29 06:51:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 06:51:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:24,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:24,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:51:24,712 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:24,713 INFO L82 PathProgramCache]: Analyzing trace with hash -20000905, now seen corresponding path program 1 times [2020-10-29 06:51:24,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:24,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764198378] [2020-10-29 06:51:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 06:51:26,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2111 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:51:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:27,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:51:27,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:27,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:51:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:51:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:27,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:51:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764198378] [2020-10-29 06:51:27,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:27,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:27,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154735404] [2020-10-29 06:51:27,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:27,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:27,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:27,721 INFO L87 Difference]: Start difference. First operand 8707 states and 10788 transitions. Second operand 7 states. [2020-10-29 06:51:31,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:31,593 INFO L93 Difference]: Finished difference Result 16272 states and 20474 transitions. [2020-10-29 06:51:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:51:31,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-29 06:51:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:31,626 INFO L225 Difference]: With dead ends: 16272 [2020-10-29 06:51:31,626 INFO L226 Difference]: Without dead ends: 8729 [2020-10-29 06:51:31,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8729 states. [2020-10-29 06:51:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8729 to 8482. [2020-10-29 06:51:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8482 states. [2020-10-29 06:51:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 10422 transitions. [2020-10-29 06:51:31,852 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 10422 transitions. Word has length 333 [2020-10-29 06:51:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:31,852 INFO L481 AbstractCegarLoop]: Abstraction has 8482 states and 10422 transitions. [2020-10-29 06:51:31,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 10422 transitions. [2020-10-29 06:51:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 06:51:31,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:31,869 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:31,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:51:31,869 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1191759612, now seen corresponding path program 1 times [2020-10-29 06:51:31,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:31,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442859921] [2020-10-29 06:51:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-29 06:51:33,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:51:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:34,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:51:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 06:51:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:34,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:51:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:51:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:34,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:51:34,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442859921] [2020-10-29 06:51:34,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:34,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:34,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274446030] [2020-10-29 06:51:34,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:34,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:34,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:34,601 INFO L87 Difference]: Start difference. First operand 8482 states and 10422 transitions. Second operand 7 states. [2020-10-29 06:51:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:38,095 INFO L93 Difference]: Finished difference Result 17354 states and 21402 transitions. [2020-10-29 06:51:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:51:38,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-29 06:51:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:38,122 INFO L225 Difference]: With dead ends: 17354 [2020-10-29 06:51:38,122 INFO L226 Difference]: Without dead ends: 9066 [2020-10-29 06:51:38,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2020-10-29 06:51:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 8672. [2020-10-29 06:51:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2020-10-29 06:51:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 10573 transitions. [2020-10-29 06:51:38,311 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 10573 transitions. Word has length 334 [2020-10-29 06:51:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:38,312 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 10573 transitions. [2020-10-29 06:51:38,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 10573 transitions. [2020-10-29 06:51:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 06:51:38,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:38,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:38,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:51:38,324 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1530873422, now seen corresponding path program 1 times [2020-10-29 06:51:38,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:38,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299913208] [2020-10-29 06:51:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:51:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:40,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:40,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:51:40,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 06:51:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 06:51:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:51:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 06:51:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 06:51:40,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299913208] [2020-10-29 06:51:40,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:40,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:40,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846865876] [2020-10-29 06:51:40,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:40,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:40,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:40,914 INFO L87 Difference]: Start difference. First operand 8672 states and 10573 transitions. Second operand 7 states. [2020-10-29 06:51:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:44,282 INFO L93 Difference]: Finished difference Result 18515 states and 22534 transitions. [2020-10-29 06:51:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:51:44,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-29 06:51:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:44,312 INFO L225 Difference]: With dead ends: 18515 [2020-10-29 06:51:44,312 INFO L226 Difference]: Without dead ends: 9847 [2020-10-29 06:51:44,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:51:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9847 states. [2020-10-29 06:51:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9847 to 9628. [2020-10-29 06:51:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9628 states. [2020-10-29 06:51:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 11625 transitions. [2020-10-29 06:51:44,545 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 11625 transitions. Word has length 343 [2020-10-29 06:51:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:44,545 INFO L481 AbstractCegarLoop]: Abstraction has 9628 states and 11625 transitions. [2020-10-29 06:51:44,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 11625 transitions. [2020-10-29 06:51:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-29 06:51:44,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:44,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:44,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:51:44,558 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:44,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1336200817, now seen corresponding path program 1 times [2020-10-29 06:51:44,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:44,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961567604] [2020-10-29 06:51:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-29 06:51:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:51:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:45,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:45,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:45,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:51:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:51:45,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:51:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:51:45,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961567604] [2020-10-29 06:51:45,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:45,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:51:45,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286960350] [2020-10-29 06:51:45,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:51:45,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:51:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:45,905 INFO L87 Difference]: Start difference. First operand 9628 states and 11625 transitions. Second operand 8 states. [2020-10-29 06:51:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:50,270 INFO L93 Difference]: Finished difference Result 17940 states and 22005 transitions. [2020-10-29 06:51:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:51:50,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 345 [2020-10-29 06:51:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:50,298 INFO L225 Difference]: With dead ends: 17940 [2020-10-29 06:51:50,298 INFO L226 Difference]: Without dead ends: 10452 [2020-10-29 06:51:50,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:51:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2020-10-29 06:51:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 10406. [2020-10-29 06:51:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10406 states. [2020-10-29 06:51:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10406 states to 10406 states and 12592 transitions. [2020-10-29 06:51:50,539 INFO L78 Accepts]: Start accepts. Automaton has 10406 states and 12592 transitions. Word has length 345 [2020-10-29 06:51:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:50,539 INFO L481 AbstractCegarLoop]: Abstraction has 10406 states and 12592 transitions. [2020-10-29 06:51:50,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:51:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 10406 states and 12592 transitions. [2020-10-29 06:51:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-29 06:51:50,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:50,551 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:50,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:51:50,552 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:50,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1359157001, now seen corresponding path program 1 times [2020-10-29 06:51:50,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:50,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810158925] [2020-10-29 06:51:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-29 06:51:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:52,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:51:52,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:51:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 06:51:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 61 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 06:51:53,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810158925] [2020-10-29 06:51:53,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:53,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:51:53,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391140465] [2020-10-29 06:51:53,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:51:53,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:51:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:51:53,448 INFO L87 Difference]: Start difference. First operand 10406 states and 12592 transitions. Second operand 10 states. [2020-10-29 06:51:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:59,959 INFO L93 Difference]: Finished difference Result 29239 states and 36075 transitions. [2020-10-29 06:51:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 06:51:59,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 345 [2020-10-29 06:51:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:00,020 INFO L225 Difference]: With dead ends: 29239 [2020-10-29 06:52:00,020 INFO L226 Difference]: Without dead ends: 20973 [2020-10-29 06:52:00,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-29 06:52:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20973 states. [2020-10-29 06:52:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20973 to 19548. [2020-10-29 06:52:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19548 states. [2020-10-29 06:52:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19548 states to 19548 states and 24084 transitions. [2020-10-29 06:52:00,517 INFO L78 Accepts]: Start accepts. Automaton has 19548 states and 24084 transitions. Word has length 345 [2020-10-29 06:52:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:00,518 INFO L481 AbstractCegarLoop]: Abstraction has 19548 states and 24084 transitions. [2020-10-29 06:52:00,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:52:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 19548 states and 24084 transitions. [2020-10-29 06:52:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-29 06:52:00,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:00,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:52:00,532 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1665816619, now seen corresponding path program 1 times [2020-10-29 06:52:00,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:00,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457217805] [2020-10-29 06:52:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:01,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:52:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:52:01,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:52:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:52:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:01,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:52:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:52:02,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457217805] [2020-10-29 06:52:02,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:02,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:02,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293828033] [2020-10-29 06:52:02,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:02,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:02,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:02,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:02,176 INFO L87 Difference]: Start difference. First operand 19548 states and 24084 transitions. Second operand 7 states. [2020-10-29 06:52:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:06,589 INFO L93 Difference]: Finished difference Result 38055 states and 47477 transitions. [2020-10-29 06:52:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:06,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-29 06:52:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:06,657 INFO L225 Difference]: With dead ends: 38055 [2020-10-29 06:52:06,657 INFO L226 Difference]: Without dead ends: 20453 [2020-10-29 06:52:06,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:52:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20453 states. [2020-10-29 06:52:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20453 to 20332. [2020-10-29 06:52:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20332 states. [2020-10-29 06:52:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20332 states to 20332 states and 25000 transitions. [2020-10-29 06:52:07,151 INFO L78 Accepts]: Start accepts. Automaton has 20332 states and 25000 transitions. Word has length 360 [2020-10-29 06:52:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:07,152 INFO L481 AbstractCegarLoop]: Abstraction has 20332 states and 25000 transitions. [2020-10-29 06:52:07,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 20332 states and 25000 transitions. [2020-10-29 06:52:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 06:52:07,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:07,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:07,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:52:07,168 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1988277410, now seen corresponding path program 1 times [2020-10-29 06:52:07,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:07,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967051001] [2020-10-29 06:52:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 06:52:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2043 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:52:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:09,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:52:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:52:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 197 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:52:09,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967051001] [2020-10-29 06:52:09,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:09,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:09,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808125699] [2020-10-29 06:52:09,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:09,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:09,894 INFO L87 Difference]: Start difference. First operand 20332 states and 25000 transitions. Second operand 7 states. [2020-10-29 06:52:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:14,703 INFO L93 Difference]: Finished difference Result 47070 states and 58912 transitions. [2020-10-29 06:52:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:14,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-29 06:52:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:14,760 INFO L225 Difference]: With dead ends: 47070 [2020-10-29 06:52:14,760 INFO L226 Difference]: Without dead ends: 27121 [2020-10-29 06:52:14,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27121 states. [2020-10-29 06:52:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27121 to 26877. [2020-10-29 06:52:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26877 states. [2020-10-29 06:52:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26877 states to 26877 states and 33103 transitions. [2020-10-29 06:52:15,332 INFO L78 Accepts]: Start accepts. Automaton has 26877 states and 33103 transitions. Word has length 367 [2020-10-29 06:52:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:15,333 INFO L481 AbstractCegarLoop]: Abstraction has 26877 states and 33103 transitions. [2020-10-29 06:52:15,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26877 states and 33103 transitions. [2020-10-29 06:52:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 06:52:15,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:15,345 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:15,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:52:15,346 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash -678478513, now seen corresponding path program 1 times [2020-10-29 06:52:15,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:15,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849977741] [2020-10-29 06:52:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:17,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:17,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 06:52:17,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:17,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-10-29 06:52:17,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-29 06:52:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:17,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:17,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:52:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:52:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:18,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:52:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:18,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 06:52:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 06:52:18,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849977741] [2020-10-29 06:52:18,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:18,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:18,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915507055] [2020-10-29 06:52:18,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:18,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:18,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:18,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:18,495 INFO L87 Difference]: Start difference. First operand 26877 states and 33103 transitions. Second operand 7 states. [2020-10-29 06:52:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:22,213 INFO L93 Difference]: Finished difference Result 51284 states and 62957 transitions. [2020-10-29 06:52:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:52:22,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-29 06:52:22,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:22,272 INFO L225 Difference]: With dead ends: 51284 [2020-10-29 06:52:22,272 INFO L226 Difference]: Without dead ends: 29251 [2020-10-29 06:52:22,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:52:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29251 states. [2020-10-29 06:52:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29251 to 27253. [2020-10-29 06:52:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27253 states. [2020-10-29 06:52:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27253 states to 27253 states and 33492 transitions. [2020-10-29 06:52:22,853 INFO L78 Accepts]: Start accepts. Automaton has 27253 states and 33492 transitions. Word has length 372 [2020-10-29 06:52:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:22,854 INFO L481 AbstractCegarLoop]: Abstraction has 27253 states and 33492 transitions. [2020-10-29 06:52:22,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 27253 states and 33492 transitions. [2020-10-29 06:52:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 06:52:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:22,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:22,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:52:22,872 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:22,872 INFO L82 PathProgramCache]: Analyzing trace with hash 998351764, now seen corresponding path program 1 times [2020-10-29 06:52:22,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:22,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924815365] [2020-10-29 06:52:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-29 06:52:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3220 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 06:52:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:26,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:52:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:52:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:52:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-29 06:52:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 281 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 06:52:27,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924815365] [2020-10-29 06:52:27,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:27,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:27,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253815727] [2020-10-29 06:52:27,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:27,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:27,280 INFO L87 Difference]: Start difference. First operand 27253 states and 33492 transitions. Second operand 10 states. [2020-10-29 06:52:29,878 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 06:52:30,920 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 06:52:34,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:34,111 INFO L93 Difference]: Finished difference Result 65900 states and 81159 transitions. [2020-10-29 06:52:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 06:52:34,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 377 [2020-10-29 06:52:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:34,198 INFO L225 Difference]: With dead ends: 65900 [2020-10-29 06:52:34,198 INFO L226 Difference]: Without dead ends: 39031 [2020-10-29 06:52:34,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-29 06:52:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39031 states. [2020-10-29 06:52:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39031 to 35750. [2020-10-29 06:52:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35750 states. [2020-10-29 06:52:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35750 states to 35750 states and 42582 transitions. [2020-10-29 06:52:35,019 INFO L78 Accepts]: Start accepts. Automaton has 35750 states and 42582 transitions. Word has length 377 [2020-10-29 06:52:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:35,019 INFO L481 AbstractCegarLoop]: Abstraction has 35750 states and 42582 transitions. [2020-10-29 06:52:35,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:52:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 35750 states and 42582 transitions. [2020-10-29 06:52:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-29 06:52:35,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:35,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:35,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:52:35,035 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:35,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1311766321, now seen corresponding path program 1 times [2020-10-29 06:52:35,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:35,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662451716] [2020-10-29 06:52:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4729 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-29 06:52:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:39,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:40,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:52:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:52:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:52:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:52:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 174 proven. 92 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-29 06:52:40,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662451716] [2020-10-29 06:52:40,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:40,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:52:40,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534377547] [2020-10-29 06:52:40,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:40,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:40,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:40,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:40,725 INFO L87 Difference]: Start difference. First operand 35750 states and 42582 transitions. Second operand 10 states. [2020-10-29 06:52:40,921 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:52:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:46,411 INFO L93 Difference]: Finished difference Result 71115 states and 88702 transitions. [2020-10-29 06:52:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 06:52:46,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 387 [2020-10-29 06:52:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:46,530 INFO L225 Difference]: With dead ends: 71115 [2020-10-29 06:52:46,530 INFO L226 Difference]: Without dead ends: 41719 [2020-10-29 06:52:46,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-29 06:52:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41719 states. [2020-10-29 06:52:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41719 to 40370. [2020-10-29 06:52:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40370 states. [2020-10-29 06:52:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40370 states to 40370 states and 47978 transitions. [2020-10-29 06:52:47,573 INFO L78 Accepts]: Start accepts. Automaton has 40370 states and 47978 transitions. Word has length 387 [2020-10-29 06:52:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:47,574 INFO L481 AbstractCegarLoop]: Abstraction has 40370 states and 47978 transitions. [2020-10-29 06:52:47,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:52:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 40370 states and 47978 transitions. [2020-10-29 06:52:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 06:52:47,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:47,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:47,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:52:47,585 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash 768263190, now seen corresponding path program 1 times [2020-10-29 06:52:47,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:47,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316677301] [2020-10-29 06:52:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:52:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:52:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:52:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-29 06:52:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 210 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:52:51,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316677301] [2020-10-29 06:52:51,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:51,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:51,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465618886] [2020-10-29 06:52:51,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:51,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:51,117 INFO L87 Difference]: Start difference. First operand 40370 states and 47978 transitions. Second operand 7 states. [2020-10-29 06:52:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:54,958 INFO L93 Difference]: Finished difference Result 81653 states and 97165 transitions. [2020-10-29 06:52:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:52:54,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-29 06:52:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:55,050 INFO L225 Difference]: With dead ends: 81653 [2020-10-29 06:52:55,050 INFO L226 Difference]: Without dead ends: 41667 [2020-10-29 06:52:55,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41667 states. [2020-10-29 06:52:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41667 to 41550. [2020-10-29 06:52:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41550 states. [2020-10-29 06:52:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41550 states to 41550 states and 48969 transitions. [2020-10-29 06:52:55,805 INFO L78 Accepts]: Start accepts. Automaton has 41550 states and 48969 transitions. Word has length 392 [2020-10-29 06:52:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:55,805 INFO L481 AbstractCegarLoop]: Abstraction has 41550 states and 48969 transitions. [2020-10-29 06:52:55,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41550 states and 48969 transitions. [2020-10-29 06:52:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 06:52:55,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:55,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:55,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:52:55,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash -861861094, now seen corresponding path program 1 times [2020-10-29 06:52:55,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:55,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387917469] [2020-10-29 06:52:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-29 06:52:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:52:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2466 [2020-10-29 06:52:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 06:52:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:52:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:52:58,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:52:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:52:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 06:52:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:52:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 06:52:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387917469] [2020-10-29 06:52:59,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:59,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:59,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541231815] [2020-10-29 06:52:59,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:59,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:59,090 INFO L87 Difference]: Start difference. First operand 41550 states and 48969 transitions. Second operand 7 states. [2020-10-29 06:53:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:04,296 INFO L93 Difference]: Finished difference Result 89253 states and 106701 transitions. [2020-10-29 06:53:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:04,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-29 06:53:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:04,426 INFO L225 Difference]: With dead ends: 89253 [2020-10-29 06:53:04,426 INFO L226 Difference]: Without dead ends: 48087 [2020-10-29 06:53:04,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48087 states. [2020-10-29 06:53:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48087 to 47648. [2020-10-29 06:53:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47648 states. [2020-10-29 06:53:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47648 states to 47648 states and 55393 transitions. [2020-10-29 06:53:05,587 INFO L78 Accepts]: Start accepts. Automaton has 47648 states and 55393 transitions. Word has length 399 [2020-10-29 06:53:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:05,587 INFO L481 AbstractCegarLoop]: Abstraction has 47648 states and 55393 transitions. [2020-10-29 06:53:05,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 47648 states and 55393 transitions. [2020-10-29 06:53:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-29 06:53:05,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:05,598 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:05,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:53:05,598 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 582237600, now seen corresponding path program 1 times [2020-10-29 06:53:05,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:05,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310296975] [2020-10-29 06:53:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:53:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:53:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:53:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:53:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:09,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:53:09,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 06:53:09,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:53:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:53:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:53:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:53:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:09,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:53:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 237 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:53:09,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310296975] [2020-10-29 06:53:09,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:09,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:53:09,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227983875] [2020-10-29 06:53:09,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:53:09,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:53:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:53:09,505 INFO L87 Difference]: Start difference. First operand 47648 states and 55393 transitions. Second operand 8 states. [2020-10-29 06:53:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:16,190 INFO L93 Difference]: Finished difference Result 97077 states and 112748 transitions. [2020-10-29 06:53:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:53:16,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 423 [2020-10-29 06:53:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:16,306 INFO L225 Difference]: With dead ends: 97077 [2020-10-29 06:53:16,306 INFO L226 Difference]: Without dead ends: 49813 [2020-10-29 06:53:16,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:53:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49813 states. [2020-10-29 06:53:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49813 to 47780. [2020-10-29 06:53:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47780 states. [2020-10-29 06:53:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47780 states to 47780 states and 55136 transitions. [2020-10-29 06:53:17,448 INFO L78 Accepts]: Start accepts. Automaton has 47780 states and 55136 transitions. Word has length 423 [2020-10-29 06:53:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:17,448 INFO L481 AbstractCegarLoop]: Abstraction has 47780 states and 55136 transitions. [2020-10-29 06:53:17,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:53:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47780 states and 55136 transitions. [2020-10-29 06:53:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-29 06:53:17,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:17,459 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:17,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:53:17,460 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1484468612, now seen corresponding path program 1 times [2020-10-29 06:53:17,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:17,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831113045] [2020-10-29 06:53:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-29 06:53:21,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3943 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 06:53:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:53:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 06:53:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:53:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:22,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-29 06:53:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:22,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:53:22,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 220 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:53:22,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831113045] [2020-10-29 06:53:22,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:22,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:22,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637465468] [2020-10-29 06:53:22,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:22,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:22,360 INFO L87 Difference]: Start difference. First operand 47780 states and 55136 transitions. Second operand 7 states. [2020-10-29 06:53:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:25,994 INFO L93 Difference]: Finished difference Result 98327 states and 113370 transitions. [2020-10-29 06:53:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:25,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-29 06:53:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:26,109 INFO L225 Difference]: With dead ends: 98327 [2020-10-29 06:53:26,109 INFO L226 Difference]: Without dead ends: 50931 [2020-10-29 06:53:26,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50931 states. [2020-10-29 06:53:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50931 to 48333. [2020-10-29 06:53:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48333 states. [2020-10-29 06:53:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48333 states to 48333 states and 55305 transitions. [2020-10-29 06:53:27,230 INFO L78 Accepts]: Start accepts. Automaton has 48333 states and 55305 transitions. Word has length 424 [2020-10-29 06:53:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:27,231 INFO L481 AbstractCegarLoop]: Abstraction has 48333 states and 55305 transitions. [2020-10-29 06:53:27,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 48333 states and 55305 transitions. [2020-10-29 06:53:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-29 06:53:27,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:27,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:27,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:53:27,247 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1929607288, now seen corresponding path program 1 times [2020-10-29 06:53:27,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:27,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701294365] [2020-10-29 06:53:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:53:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:28,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:28,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:28,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:53:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:53:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat