/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:50:58,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:50:58,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:50:58,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:50:58,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:50:58,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:50:58,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:50:58,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:50:58,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:50:58,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:50:58,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:50:58,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:50:58,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:50:58,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:50:58,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:50:58,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:50:58,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:50:58,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:50:58,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:50:58,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:50:58,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:50:58,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:50:58,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:50:58,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:50:58,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:50:58,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:50:58,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:50:58,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:50:58,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:50:58,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:50:58,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:50:58,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:50:58,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:50:58,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:50:58,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:50:58,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:50:58,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:50:58,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:50:58,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:50:58,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:50:58,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:50:58,492 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 06:50:58,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:50:58,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:50:58,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:50:58,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:50:58,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:50:58,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:50:58,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:50:58,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:50:58,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:50:58,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:50:58,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:50:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:50:58,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:50:58,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:50:58,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:50:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:50:58,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:50:58,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:50:58,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:50:58,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:50:58,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:50:58,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:58,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:50:58,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:50:58,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:50:58,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:50:58,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:50:58,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:50:58,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:50:58,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:50:59,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:50:59,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:50:59,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:50:59,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:50:59,063 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:50:59,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2020-10-29 06:50:59,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d42b88c0c/25a9ddc67ce04729ad541675789f2ea3/FLAGa5005db3b [2020-10-29 06:51:00,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:51:00,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2020-10-29 06:51:00,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d42b88c0c/25a9ddc67ce04729ad541675789f2ea3/FLAGa5005db3b [2020-10-29 06:51:00,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d42b88c0c/25a9ddc67ce04729ad541675789f2ea3 [2020-10-29 06:51:00,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:51:00,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:51:00,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:00,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:51:00,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:51:00,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:00" (1/1) ... [2020-10-29 06:51:00,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e59fcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:00, skipping insertion in model container [2020-10-29 06:51:00,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:00" (1/1) ... [2020-10-29 06:51:00,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:51:00,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:51:00,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:00,933 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:51:01,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:01,154 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:51:01,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01 WrapperNode [2020-10-29 06:51:01,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:01,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:51:01,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:51:01,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:51:01,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (1/1) ... [2020-10-29 06:51:01,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:51:01,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:51:01,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:51:01,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:51:01,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (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 06:51:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:51:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:51:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:51:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:51:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:51:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:51:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:51:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:51:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:51:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:51:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:51:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:51:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:51:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:51:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:51:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:51:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:51:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:51:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:51:03,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:51:03,630 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:51:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:03 BoogieIcfgContainer [2020-10-29 06:51:03,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:51:03,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:51:03,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:51:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:51:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:51:00" (1/3) ... [2020-10-29 06:51:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a1ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:03, skipping insertion in model container [2020-10-29 06:51:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:01" (2/3) ... [2020-10-29 06:51:03,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a1ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:03, skipping insertion in model container [2020-10-29 06:51:03,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:03" (3/3) ... [2020-10-29 06:51:03,642 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label50.c [2020-10-29 06:51:03,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:51:03,660 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:51:03,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:51:03,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:51:03,704 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:51:03,704 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:51:03,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:51:03,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:51:03,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:51:03,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:51:03,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:51:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:51:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 06:51:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:03,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:03,739 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash 866073966, now seen corresponding path program 1 times [2020-10-29 06:51:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:03,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533041528] [2020-10-29 06:51:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 06:51:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-29 06:51:04,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:04,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 06:51:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:51:04,805 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:51:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:04,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:04,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:04,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:04,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:51:04,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:04,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:04,891 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 06:51:04,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533041528] [2020-10-29 06:51:04,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:04,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:51:04,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770662365] [2020-10-29 06:51:04,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:51:04,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:04,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:51:04,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:51:04,932 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:51:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:08,159 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-29 06:51:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:08,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-29 06:51:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:08,197 INFO L225 Difference]: With dead ends: 811 [2020-10-29 06:51:08,197 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 06:51:08,216 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 06:51:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 06:51:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-29 06:51:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-29 06:51:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-29 06:51:08,339 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 43 [2020-10-29 06:51:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:08,341 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-29 06:51:08,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:51:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-29 06:51:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 06:51:08,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:08,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:08,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:51:08,350 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:08,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1783180269, now seen corresponding path program 1 times [2020-10-29 06:51:08,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:08,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228962930] [2020-10-29 06:51:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:10,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:10,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:10,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-29 06:51:10,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:10,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:51:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:11,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:51:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:51:11,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:11,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:51:11,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:11,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:51:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:11,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228962930] [2020-10-29 06:51:11,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:11,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:51:11,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603983272] [2020-10-29 06:51:11,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:51:11,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:11,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:51:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:11,350 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 8 states. [2020-10-29 06:51:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:16,020 INFO L93 Difference]: Finished difference Result 1663 states and 2474 transitions. [2020-10-29 06:51:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:16,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-29 06:51:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:16,036 INFO L225 Difference]: With dead ends: 1663 [2020-10-29 06:51:16,036 INFO L226 Difference]: Without dead ends: 1240 [2020-10-29 06:51:16,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:51:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-29 06:51:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1204. [2020-10-29 06:51:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-29 06:51:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1689 transitions. [2020-10-29 06:51:16,137 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1689 transitions. Word has length 115 [2020-10-29 06:51:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1689 transitions. [2020-10-29 06:51:16,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:51:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1689 transitions. [2020-10-29 06:51:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 06:51:16,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:16,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:16,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:51:16,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:16,152 INFO L82 PathProgramCache]: Analyzing trace with hash 988732689, now seen corresponding path program 1 times [2020-10-29 06:51:16,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:16,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845959458] [2020-10-29 06:51:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:17,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 06:51:17,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-29 06:51:17,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:17,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:17,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:51:17,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:17,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:17,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:17,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:51:17,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 06:51:17,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:17,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:17,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:51:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:18,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845959458] [2020-10-29 06:51:18,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:18,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:18,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473101244] [2020-10-29 06:51:18,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:18,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:18,098 INFO L87 Difference]: Start difference. First operand 1204 states and 1689 transitions. Second operand 7 states. [2020-10-29 06:51:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:21,562 INFO L93 Difference]: Finished difference Result 3214 states and 4530 transitions. [2020-10-29 06:51:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:21,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-29 06:51:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:21,576 INFO L225 Difference]: With dead ends: 3214 [2020-10-29 06:51:21,577 INFO L226 Difference]: Without dead ends: 2016 [2020-10-29 06:51:21,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 06:51:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2020-10-29 06:51:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1803. [2020-10-29 06:51:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2020-10-29 06:51:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2362 transitions. [2020-10-29 06:51:21,665 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2362 transitions. Word has length 116 [2020-10-29 06:51:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:21,667 INFO L481 AbstractCegarLoop]: Abstraction has 1803 states and 2362 transitions. [2020-10-29 06:51:21,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2362 transitions. [2020-10-29 06:51:21,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 06:51:21,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:21,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:21,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:51:21,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:21,676 INFO L82 PathProgramCache]: Analyzing trace with hash -476867655, now seen corresponding path program 1 times [2020-10-29 06:51:21,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:21,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328594728] [2020-10-29 06:51:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:22,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 06:51:22,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-29 06:51:22,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:22,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:51:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:51:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:51:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:22,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:23,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 06:51:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:23,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:51:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:51:23,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328594728] [2020-10-29 06:51:23,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:23,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:51:23,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473153715] [2020-10-29 06:51:23,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:23,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:23,212 INFO L87 Difference]: Start difference. First operand 1803 states and 2362 transitions. Second operand 6 states. [2020-10-29 06:51:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:26,269 INFO L93 Difference]: Finished difference Result 4247 states and 5925 transitions. [2020-10-29 06:51:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:51:26,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-29 06:51:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:26,288 INFO L225 Difference]: With dead ends: 4247 [2020-10-29 06:51:26,288 INFO L226 Difference]: Without dead ends: 2450 [2020-10-29 06:51:26,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2020-10-29 06:51:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2403. [2020-10-29 06:51:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-10-29 06:51:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3155 transitions. [2020-10-29 06:51:26,396 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3155 transitions. Word has length 159 [2020-10-29 06:51:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:26,398 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 3155 transitions. [2020-10-29 06:51:26,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:51:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3155 transitions. [2020-10-29 06:51:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 06:51:26,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:26,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:26,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:51:26,403 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1331185766, now seen corresponding path program 1 times [2020-10-29 06:51:26,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:26,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946922085] [2020-10-29 06:51:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 06:51:26,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:51:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 06:51:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:27,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:27,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:27,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:27,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:51:27,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:27,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:51:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:27,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946922085] [2020-10-29 06:51:27,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:27,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:51:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561733696] [2020-10-29 06:51:27,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:27,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:27,241 INFO L87 Difference]: Start difference. First operand 2403 states and 3155 transitions. Second operand 6 states. [2020-10-29 06:51:31,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:31,282 INFO L93 Difference]: Finished difference Result 6381 states and 8513 transitions. [2020-10-29 06:51:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:51:31,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-10-29 06:51:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:31,308 INFO L225 Difference]: With dead ends: 6381 [2020-10-29 06:51:31,308 INFO L226 Difference]: Without dead ends: 3984 [2020-10-29 06:51:31,317 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 06:51:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2020-10-29 06:51:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3377. [2020-10-29 06:51:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3377 states. [2020-10-29 06:51:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4463 transitions. [2020-10-29 06:51:31,442 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4463 transitions. Word has length 174 [2020-10-29 06:51:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:31,443 INFO L481 AbstractCegarLoop]: Abstraction has 3377 states and 4463 transitions. [2020-10-29 06:51:31,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:51:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4463 transitions. [2020-10-29 06:51:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 06:51:31,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:31,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:51:31,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:51:31,451 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:31,451 INFO L82 PathProgramCache]: Analyzing trace with hash -777445750, now seen corresponding path program 1 times [2020-10-29 06:51:31,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:31,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252832035] [2020-10-29 06:51:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 06:51:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-29 06:51:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:32,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:51:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 06:51:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:33,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:51:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 06:51:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:51:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:51:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:51:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:51:34,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252832035] [2020-10-29 06:51:34,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:34,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:51:34,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12438788] [2020-10-29 06:51:34,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:51:34,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:34,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:51:34,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:51:34,077 INFO L87 Difference]: Start difference. First operand 3377 states and 4463 transitions. Second operand 9 states. [2020-10-29 06:51:37,023 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-29 06:51:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:38,667 INFO L93 Difference]: Finished difference Result 9504 states and 12785 transitions. [2020-10-29 06:51:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:51:38,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-29 06:51:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:38,704 INFO L225 Difference]: With dead ends: 9504 [2020-10-29 06:51:38,705 INFO L226 Difference]: Without dead ends: 6133 [2020-10-29 06:51:38,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:51:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2020-10-29 06:51:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6110. [2020-10-29 06:51:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-10-29 06:51:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7810 transitions. [2020-10-29 06:51:38,934 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7810 transitions. Word has length 253 [2020-10-29 06:51:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:38,935 INFO L481 AbstractCegarLoop]: Abstraction has 6110 states and 7810 transitions. [2020-10-29 06:51:38,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:51:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7810 transitions. [2020-10-29 06:51:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 06:51:38,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:38,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:51:38,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:51:38,946 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash -781410599, now seen corresponding path program 1 times [2020-10-29 06:51:38,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:38,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962830708] [2020-10-29 06:51:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-29 06:51:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4350 [2020-10-29 06:51:43,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-29 06:51:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:51:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:51:43,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:43,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:43,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:51:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:51:43,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:51:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 06:51:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:51:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:51:43,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:51:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:51:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:51:44,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962830708] [2020-10-29 06:51:44,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:44,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:44,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744231626] [2020-10-29 06:51:44,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:44,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:44,158 INFO L87 Difference]: Start difference. First operand 6110 states and 7810 transitions. Second operand 7 states. [2020-10-29 06:51:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:47,271 INFO L93 Difference]: Finished difference Result 14198 states and 19092 transitions. [2020-10-29 06:51:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:51:47,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-29 06:51:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:47,319 INFO L225 Difference]: With dead ends: 14198 [2020-10-29 06:51:47,319 INFO L226 Difference]: Without dead ends: 8472 [2020-10-29 06:51:47,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 06:51:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2020-10-29 06:51:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 7652. [2020-10-29 06:51:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2020-10-29 06:51:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 9667 transitions. [2020-10-29 06:51:47,577 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 9667 transitions. Word has length 304 [2020-10-29 06:51:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:47,578 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 9667 transitions. [2020-10-29 06:51:47,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 9667 transitions. [2020-10-29 06:51:47,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-29 06:51:47,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:47,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:51:47,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:51:47,592 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1251909955, now seen corresponding path program 1 times [2020-10-29 06:51:47,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:47,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245691336] [2020-10-29 06:51:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 06:51:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:51:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 06:51:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-29 06:51:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:51:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:52,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:53,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:51:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:51:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:53,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:51:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 06:51:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:51:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 06:51:53,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:53,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:51:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 229 proven. 36 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 06:51:53,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245691336] [2020-10-29 06:51:53,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:53,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:53,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087459237] [2020-10-29 06:51:53,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:53,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:53,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:53,604 INFO L87 Difference]: Start difference. First operand 7652 states and 9667 transitions. Second operand 7 states. [2020-10-29 06:51:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:58,226 INFO L93 Difference]: Finished difference Result 16095 states and 20564 transitions. [2020-10-29 06:51:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:51:58,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-29 06:51:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:58,277 INFO L225 Difference]: With dead ends: 16095 [2020-10-29 06:51:58,278 INFO L226 Difference]: Without dead ends: 9800 [2020-10-29 06:51:58,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 06:51:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2020-10-29 06:51:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 8439. [2020-10-29 06:51:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8439 states. [2020-10-29 06:51:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 10507 transitions. [2020-10-29 06:51:58,523 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 10507 transitions. Word has length 322 [2020-10-29 06:51:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:58,524 INFO L481 AbstractCegarLoop]: Abstraction has 8439 states and 10507 transitions. [2020-10-29 06:51:58,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 10507 transitions. [2020-10-29 06:51:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 06:51:58,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:58,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:58,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:51:58,538 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1942982716, now seen corresponding path program 1 times [2020-10-29 06:51:58,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:58,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712430242] [2020-10-29 06:51:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:52:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:52:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:03,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:52:04,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:04,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:52:04,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:52:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:52:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:52:04,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 06:52:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:52:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-29 06:52:04,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712430242] [2020-10-29 06:52:04,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:04,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:04,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147199148] [2020-10-29 06:52:04,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:04,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:04,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:04,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:04,433 INFO L87 Difference]: Start difference. First operand 8439 states and 10507 transitions. Second operand 5 states. [2020-10-29 06:52:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:06,825 INFO L93 Difference]: Finished difference Result 9592 states and 12004 transitions. [2020-10-29 06:52:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:06,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-29 06:52:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:06,866 INFO L225 Difference]: With dead ends: 9592 [2020-10-29 06:52:06,866 INFO L226 Difference]: Without dead ends: 9589 [2020-10-29 06:52:06,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2020-10-29 06:52:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 9385. [2020-10-29 06:52:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-29 06:52:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 11722 transitions. [2020-10-29 06:52:07,084 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 11722 transitions. Word has length 333 [2020-10-29 06:52:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:07,085 INFO L481 AbstractCegarLoop]: Abstraction has 9385 states and 11722 transitions. [2020-10-29 06:52:07,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:52:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 11722 transitions. [2020-10-29 06:52:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 06:52:07,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:07,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:07,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:52:07,101 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:07,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:07,101 INFO L82 PathProgramCache]: Analyzing trace with hash 855993548, now seen corresponding path program 1 times [2020-10-29 06:52:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:07,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923543752] [2020-10-29 06:52:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:09,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:52:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:52:09,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:52:09,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:52:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:52:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 06:52:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:52:09,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923543752] [2020-10-29 06:52:09,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:09,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:09,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550521247] [2020-10-29 06:52:09,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:09,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:09,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:09,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:09,773 INFO L87 Difference]: Start difference. First operand 9385 states and 11722 transitions. Second operand 7 states. [2020-10-29 06:52:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:13,070 INFO L93 Difference]: Finished difference Result 19968 states and 25198 transitions. [2020-10-29 06:52:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:13,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-29 06:52:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:13,122 INFO L225 Difference]: With dead ends: 19968 [2020-10-29 06:52:13,122 INFO L226 Difference]: Without dead ends: 10967 [2020-10-29 06:52:13,146 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 06:52:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2020-10-29 06:52:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 10935. [2020-10-29 06:52:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10935 states. [2020-10-29 06:52:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10935 states to 10935 states and 13606 transitions. [2020-10-29 06:52:13,420 INFO L78 Accepts]: Start accepts. Automaton has 10935 states and 13606 transitions. Word has length 338 [2020-10-29 06:52:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:13,421 INFO L481 AbstractCegarLoop]: Abstraction has 10935 states and 13606 transitions. [2020-10-29 06:52:13,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10935 states and 13606 transitions. [2020-10-29 06:52:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-29 06:52:13,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:13,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:13,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:52:13,439 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2118507650, now seen corresponding path program 1 times [2020-10-29 06:52:13,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:13,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136233493] [2020-10-29 06:52:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:52:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:16,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:52:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 06:52:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:16,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 185 proven. 78 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:52:16,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136233493] [2020-10-29 06:52:16,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:16,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192379305] [2020-10-29 06:52:16,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:16,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:16,600 INFO L87 Difference]: Start difference. First operand 10935 states and 13606 transitions. Second operand 7 states. [2020-10-29 06:52:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:21,109 INFO L93 Difference]: Finished difference Result 24979 states and 31707 transitions. [2020-10-29 06:52:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:21,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-29 06:52:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:21,162 INFO L225 Difference]: With dead ends: 24979 [2020-10-29 06:52:21,163 INFO L226 Difference]: Without dead ends: 14428 [2020-10-29 06:52:21,194 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 06:52:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2020-10-29 06:52:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 14229. [2020-10-29 06:52:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14229 states. [2020-10-29 06:52:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14229 states to 14229 states and 17894 transitions. [2020-10-29 06:52:21,513 INFO L78 Accepts]: Start accepts. Automaton has 14229 states and 17894 transitions. Word has length 347 [2020-10-29 06:52:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:21,513 INFO L481 AbstractCegarLoop]: Abstraction has 14229 states and 17894 transitions. [2020-10-29 06:52:21,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14229 states and 17894 transitions. [2020-10-29 06:52:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-29 06:52:21,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:21,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-10-29 06:52:21,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:52:21,534 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash 213757254, now seen corresponding path program 1 times [2020-10-29 06:52:21,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:21,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157237754] [2020-10-29 06:52:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-29 06:52:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-10-29 06:52:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 06:52:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:23,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:23,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:52:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:52:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 187 proven. 80 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:52:24,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157237754] [2020-10-29 06:52:24,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:24,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:24,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240039120] [2020-10-29 06:52:24,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:24,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:24,245 INFO L87 Difference]: Start difference. First operand 14229 states and 17894 transitions. Second operand 8 states. [2020-10-29 06:52:26,986 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 06:52:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:29,371 INFO L93 Difference]: Finished difference Result 28919 states and 36437 transitions. [2020-10-29 06:52:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:52:29,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 349 [2020-10-29 06:52:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:29,423 INFO L225 Difference]: With dead ends: 28919 [2020-10-29 06:52:29,423 INFO L226 Difference]: Without dead ends: 15074 [2020-10-29 06:52:29,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:29,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15074 states. [2020-10-29 06:52:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15074 to 14073. [2020-10-29 06:52:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14073 states. [2020-10-29 06:52:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14073 states to 14073 states and 17296 transitions. [2020-10-29 06:52:29,787 INFO L78 Accepts]: Start accepts. Automaton has 14073 states and 17296 transitions. Word has length 349 [2020-10-29 06:52:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:29,788 INFO L481 AbstractCegarLoop]: Abstraction has 14073 states and 17296 transitions. [2020-10-29 06:52:29,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14073 states and 17296 transitions. [2020-10-29 06:52:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-29 06:52:29,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:29,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:52:29,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:52:29,803 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1689882361, now seen corresponding path program 1 times [2020-10-29 06:52:29,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:29,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673668897] [2020-10-29 06:52:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:30,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:30,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 06:52:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:30,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:30,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:30,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:52:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:30,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:30,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:52:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:52:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:52:31,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673668897] [2020-10-29 06:52:31,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:31,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:31,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282851948] [2020-10-29 06:52:31,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:31,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:31,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:31,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:31,020 INFO L87 Difference]: Start difference. First operand 14073 states and 17296 transitions. Second operand 5 states. [2020-10-29 06:52:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:33,884 INFO L93 Difference]: Finished difference Result 28341 states and 35153 transitions. [2020-10-29 06:52:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:33,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 349 [2020-10-29 06:52:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:33,936 INFO L225 Difference]: With dead ends: 28341 [2020-10-29 06:52:33,936 INFO L226 Difference]: Without dead ends: 16603 [2020-10-29 06:52:33,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2020-10-29 06:52:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 16196. [2020-10-29 06:52:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16196 states. [2020-10-29 06:52:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16196 states to 16196 states and 19838 transitions. [2020-10-29 06:52:34,314 INFO L78 Accepts]: Start accepts. Automaton has 16196 states and 19838 transitions. Word has length 349 [2020-10-29 06:52:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:34,315 INFO L481 AbstractCegarLoop]: Abstraction has 16196 states and 19838 transitions. [2020-10-29 06:52:34,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:52:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 16196 states and 19838 transitions. [2020-10-29 06:52:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-29 06:52:34,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:34,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:34,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:52:34,331 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 17305083, now seen corresponding path program 1 times [2020-10-29 06:52:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651273187] [2020-10-29 06:52:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-29 06:52:35,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:35,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:35,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:52:35,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:52:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:35,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:52:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:52:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:52:36,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651273187] [2020-10-29 06:52:36,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:36,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:36,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138330604] [2020-10-29 06:52:36,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:36,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:36,283 INFO L87 Difference]: Start difference. First operand 16196 states and 19838 transitions. Second operand 7 states. [2020-10-29 06:52:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:41,203 INFO L93 Difference]: Finished difference Result 29260 states and 35695 transitions. [2020-10-29 06:52:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:52:41,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-29 06:52:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:41,246 INFO L225 Difference]: With dead ends: 29260 [2020-10-29 06:52:41,247 INFO L226 Difference]: Without dead ends: 15769 [2020-10-29 06:52:41,270 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 06:52:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15769 states. [2020-10-29 06:52:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15769 to 14980. [2020-10-29 06:52:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14980 states. [2020-10-29 06:52:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14980 states to 14980 states and 17697 transitions. [2020-10-29 06:52:41,596 INFO L78 Accepts]: Start accepts. Automaton has 14980 states and 17697 transitions. Word has length 364 [2020-10-29 06:52:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 14980 states and 17697 transitions. [2020-10-29 06:52:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14980 states and 17697 transitions. [2020-10-29 06:52:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 06:52:41,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:41,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:52:41,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:52:41,610 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1910421621, now seen corresponding path program 1 times [2020-10-29 06:52:41,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:41,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274619260] [2020-10-29 06:52:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 06:52:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:43,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:52:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-29 06:52:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 06:52:44,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274619260] [2020-10-29 06:52:44,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:44,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:44,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919997671] [2020-10-29 06:52:44,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:44,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:44,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:44,209 INFO L87 Difference]: Start difference. First operand 14980 states and 17697 transitions. Second operand 7 states. [2020-10-29 06:52:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:47,893 INFO L93 Difference]: Finished difference Result 30575 states and 36171 transitions. [2020-10-29 06:52:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:52:47,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-29 06:52:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:47,932 INFO L225 Difference]: With dead ends: 30575 [2020-10-29 06:52:47,932 INFO L226 Difference]: Without dead ends: 15787 [2020-10-29 06:52:47,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:52:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15787 states. [2020-10-29 06:52:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15787 to 15558. [2020-10-29 06:52:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15558 states. [2020-10-29 06:52:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15558 states to 15558 states and 18252 transitions. [2020-10-29 06:52:48,270 INFO L78 Accepts]: Start accepts. Automaton has 15558 states and 18252 transitions. Word has length 372 [2020-10-29 06:52:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:48,270 INFO L481 AbstractCegarLoop]: Abstraction has 15558 states and 18252 transitions. [2020-10-29 06:52:48,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 15558 states and 18252 transitions. [2020-10-29 06:52:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-29 06:52:48,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:48,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:48,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:52:48,284 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash -5998177, now seen corresponding path program 1 times [2020-10-29 06:52:48,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:48,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602395202] [2020-10-29 06:52:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-29 06:52:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-29 06:52:50,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-29 06:52:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:52:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:52:50,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:52:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 06:52:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:50,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 06:52:50,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602395202] [2020-10-29 06:52:50,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:50,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:50,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302459293] [2020-10-29 06:52:50,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:50,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:50,995 INFO L87 Difference]: Start difference. First operand 15558 states and 18252 transitions. Second operand 8 states. [2020-10-29 06:52:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:54,530 INFO L93 Difference]: Finished difference Result 26901 states and 31583 transitions. [2020-10-29 06:52:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:52:54,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 376 [2020-10-29 06:52:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:54,569 INFO L225 Difference]: With dead ends: 26901 [2020-10-29 06:52:54,569 INFO L226 Difference]: Without dead ends: 15990 [2020-10-29 06:52:54,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15990 states. [2020-10-29 06:52:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15990 to 15558. [2020-10-29 06:52:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15558 states. [2020-10-29 06:52:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15558 states to 15558 states and 18169 transitions. [2020-10-29 06:52:55,041 INFO L78 Accepts]: Start accepts. Automaton has 15558 states and 18169 transitions. Word has length 376 [2020-10-29 06:52:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:55,042 INFO L481 AbstractCegarLoop]: Abstraction has 15558 states and 18169 transitions. [2020-10-29 06:52:55,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15558 states and 18169 transitions. [2020-10-29 06:52:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-29 06:52:55,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:55,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:55,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:52:55,056 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash 979436900, now seen corresponding path program 1 times [2020-10-29 06:52:55,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:55,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952847081] [2020-10-29 06:52:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3583 [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:52:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 06:52:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:58,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:59,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:59,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:52:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-29 06:52:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:59,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:59,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 293 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 06:52:59,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952847081] [2020-10-29 06:52:59,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:59,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:59,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492504457] [2020-10-29 06:52:59,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:59,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:59,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:59,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:59,860 INFO L87 Difference]: Start difference. First operand 15558 states and 18169 transitions. Second operand 10 states. [2020-10-29 06:53:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:06,637 INFO L93 Difference]: Finished difference Result 35494 states and 41412 transitions. [2020-10-29 06:53:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:53:06,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 381 [2020-10-29 06:53:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:06,682 INFO L225 Difference]: With dead ends: 35494 [2020-10-29 06:53:06,683 INFO L226 Difference]: Without dead ends: 20320 [2020-10-29 06:53:06,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-29 06:53:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20320 states. [2020-10-29 06:53:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20320 to 18760. [2020-10-29 06:53:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18760 states. [2020-10-29 06:53:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18760 states to 18760 states and 21552 transitions. [2020-10-29 06:53:07,071 INFO L78 Accepts]: Start accepts. Automaton has 18760 states and 21552 transitions. Word has length 381 [2020-10-29 06:53:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:07,071 INFO L481 AbstractCegarLoop]: Abstraction has 18760 states and 21552 transitions. [2020-10-29 06:53:07,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:53:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18760 states and 21552 transitions. [2020-10-29 06:53:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 06:53:07,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:07,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:53:07,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:53:07,092 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash 304475678, now seen corresponding path program 1 times [2020-10-29 06:53:07,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:07,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130534498] [2020-10-29 06:53:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4859 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-29 06:53:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 06:53:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:12,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:53:12,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:53:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 06:53:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:53:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:53:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:53:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 431 proven. 152 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 06:53:12,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130534498] [2020-10-29 06:53:12,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:12,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:53:12,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924548567] [2020-10-29 06:53:12,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:53:12,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:12,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:53:12,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:53:12,980 INFO L87 Difference]: Start difference. First operand 18760 states and 21552 transitions. Second operand 9 states. [2020-10-29 06:53:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:17,993 INFO L93 Difference]: Finished difference Result 40987 states and 47877 transitions. [2020-10-29 06:53:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:53:17,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 463 [2020-10-29 06:53:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:18,046 INFO L225 Difference]: With dead ends: 40987 [2020-10-29 06:53:18,046 INFO L226 Difference]: Without dead ends: 27058 [2020-10-29 06:53:18,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:53:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27058 states. [2020-10-29 06:53:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27058 to 26830. [2020-10-29 06:53:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26830 states. [2020-10-29 06:53:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26830 states to 26830 states and 30717 transitions. [2020-10-29 06:53:18,578 INFO L78 Accepts]: Start accepts. Automaton has 26830 states and 30717 transitions. Word has length 463 [2020-10-29 06:53:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:18,580 INFO L481 AbstractCegarLoop]: Abstraction has 26830 states and 30717 transitions. [2020-10-29 06:53:18,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:53:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 26830 states and 30717 transitions. [2020-10-29 06:53:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-29 06:53:18,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:18,613 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:53:18,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:53:18,613 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1408264023, now seen corresponding path program 1 times [2020-10-29 06:53:18,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:18,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304685917] [2020-10-29 06:53:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2294 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 06:53:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:21,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:21,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:21,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 06:53:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:53:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:53:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-10-29 06:53:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 06:53:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2020-10-29 06:53:21,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304685917] [2020-10-29 06:53:21,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:21,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:53:21,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366781374] [2020-10-29 06:53:21,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:53:21,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:21,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:53:21,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:21,937 INFO L87 Difference]: Start difference. First operand 26830 states and 30717 transitions. Second operand 6 states. [2020-10-29 06:53:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:24,163 INFO L93 Difference]: Finished difference Result 49633 states and 56950 transitions. [2020-10-29 06:53:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:24,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 553 [2020-10-29 06:53:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:24,211 INFO L225 Difference]: With dead ends: 49633 [2020-10-29 06:53:24,211 INFO L226 Difference]: Without dead ends: 26098 [2020-10-29 06:53:24,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26098 states. [2020-10-29 06:53:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26098 to 25848. [2020-10-29 06:53:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25848 states. [2020-10-29 06:53:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25848 states to 25848 states and 29564 transitions. [2020-10-29 06:53:24,680 INFO L78 Accepts]: Start accepts. Automaton has 25848 states and 29564 transitions. Word has length 553 [2020-10-29 06:53:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:24,681 INFO L481 AbstractCegarLoop]: Abstraction has 25848 states and 29564 transitions. [2020-10-29 06:53:24,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:53:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 25848 states and 29564 transitions. [2020-10-29 06:53:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-29 06:53:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:24,713 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:24,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:53:24,713 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:24,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1252795915, now seen corresponding path program 1 times [2020-10-29 06:53:24,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:24,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106186415] [2020-10-29 06:53:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3697 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-29 06:53:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-29 06:53:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:28,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 06:53:28,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:53:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:28,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-29 06:53:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:29,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:29,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:53:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:29,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:53:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-10-29 06:53:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:29,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:53:29,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:53:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 596 proven. 72 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 06:53:29,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106186415] [2020-10-29 06:53:29,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:29,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:53:29,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907687481] [2020-10-29 06:53:29,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:53:29,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:29,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:53:29,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:53:29,543 INFO L87 Difference]: Start difference. First operand 25848 states and 29564 transitions. Second operand 9 states. [2020-10-29 06:53:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:34,505 INFO L93 Difference]: Finished difference Result 54193 states and 62695 transitions. [2020-10-29 06:53:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:53:34,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 577 [2020-10-29 06:53:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:34,580 INFO L225 Difference]: With dead ends: 54193 [2020-10-29 06:53:34,580 INFO L226 Difference]: Without dead ends: 32606 [2020-10-29 06:53:34,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:53:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32606 states. [2020-10-29 06:53:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32606 to 32380. [2020-10-29 06:53:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32380 states. [2020-10-29 06:53:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32380 states to 32380 states and 36978 transitions. [2020-10-29 06:53:35,498 INFO L78 Accepts]: Start accepts. Automaton has 32380 states and 36978 transitions. Word has length 577 [2020-10-29 06:53:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:35,499 INFO L481 AbstractCegarLoop]: Abstraction has 32380 states and 36978 transitions. [2020-10-29 06:53:35,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:53:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32380 states and 36978 transitions. [2020-10-29 06:53:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-29 06:53:35,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:35,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2020-10-29 06:53:35,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:53:35,542 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 344367008, now seen corresponding path program 1 times [2020-10-29 06:53:35,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:35,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027078033] [2020-10-29 06:53:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:40,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-29 06:53:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:53:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 06:53:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-29 06:53:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:53:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 06:53:41,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:53:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-29 06:53:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 06:53:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-29 06:53:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:53:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 06:53:41,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 06:53:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 319 proven. 248 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-29 06:53:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027078033] [2020-10-29 06:53:42,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:42,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:42,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028936877] [2020-10-29 06:53:42,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:42,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:42,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:42,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:42,084 INFO L87 Difference]: Start difference. First operand 32380 states and 36978 transitions. Second operand 7 states. [2020-10-29 06:53:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:46,639 INFO L93 Difference]: Finished difference Result 63848 states and 72992 transitions. [2020-10-29 06:53:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:46,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-29 06:53:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:46,698 INFO L225 Difference]: With dead ends: 63848 [2020-10-29 06:53:46,698 INFO L226 Difference]: Without dead ends: 31852 [2020-10-29 06:53:46,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 06:53:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31852 states. [2020-10-29 06:53:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31852 to 31782. [2020-10-29 06:53:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31782 states. [2020-10-29 06:53:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31782 states to 31782 states and 35976 transitions. [2020-10-29 06:53:47,143 INFO L78 Accepts]: Start accepts. Automaton has 31782 states and 35976 transitions. Word has length 658 [2020-10-29 06:53:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:47,144 INFO L481 AbstractCegarLoop]: Abstraction has 31782 states and 35976 transitions. [2020-10-29 06:53:47,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 31782 states and 35976 transitions. [2020-10-29 06:53:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2020-10-29 06:53:47,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:47,383 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-29 06:53:47,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:53:47,383 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 654088753, now seen corresponding path program 1 times [2020-10-29 06:53:47,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:47,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000211515] [2020-10-29 06:53:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 769 [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:53:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-29 06:53:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:53:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:53:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:53:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:53:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-29 06:53:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 06:53:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-29 06:53:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:53:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-29 06:53:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 441 proven. 895 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-10-29 06:53:54,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000211515] [2020-10-29 06:53:54,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:54,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:53:54,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766192124] [2020-10-29 06:53:54,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:53:54,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:54,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:53:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:53:54,083 INFO L87 Difference]: Start difference. First operand 31782 states and 35976 transitions. Second operand 10 states. [2020-10-29 06:54:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:01,471 INFO L93 Difference]: Finished difference Result 65813 states and 74994 transitions. [2020-10-29 06:54:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:54:01,473 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 747 [2020-10-29 06:54:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:01,543 INFO L225 Difference]: With dead ends: 65813 [2020-10-29 06:54:01,544 INFO L226 Difference]: Without dead ends: 38092 [2020-10-29 06:54:01,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:54:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38092 states. [2020-10-29 06:54:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38092 to 37902. [2020-10-29 06:54:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37902 states. [2020-10-29 06:54:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37902 states to 37902 states and 42726 transitions. [2020-10-29 06:54:02,233 INFO L78 Accepts]: Start accepts. Automaton has 37902 states and 42726 transitions. Word has length 747 [2020-10-29 06:54:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:02,234 INFO L481 AbstractCegarLoop]: Abstraction has 37902 states and 42726 transitions. [2020-10-29 06:54:02,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:54:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 37902 states and 42726 transitions. [2020-10-29 06:54:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-29 06:54:02,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:02,266 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2020-10-29 06:54:02,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:54:02,266 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -776962726, now seen corresponding path program 1 times [2020-10-29 06:54:02,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917245942] [2020-10-29 06:54:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-29 06:54:07,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 06:54:07,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 594 [2020-10-29 06:54:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:54:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:07,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:54:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-29 06:54:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-29 06:54:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:54:08,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:54:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-29 06:54:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:54:08,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:54:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 789 proven. 2 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2020-10-29 06:54:08,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917245942] [2020-10-29 06:54:08,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:08,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:08,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945397420] [2020-10-29 06:54:08,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:08,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:08,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:08,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:08,750 INFO L87 Difference]: Start difference. First operand 37902 states and 42726 transitions. Second operand 7 states. [2020-10-29 06:54:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:12,246 INFO L93 Difference]: Finished difference Result 70642 states and 79597 transitions. [2020-10-29 06:54:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:54:12,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 766 [2020-10-29 06:54:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:12,330 INFO L225 Difference]: With dead ends: 70642 [2020-10-29 06:54:12,331 INFO L226 Difference]: Without dead ends: 36997 [2020-10-29 06:54:12,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 06:54:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36997 states. [2020-10-29 06:54:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36997 to 36163. [2020-10-29 06:54:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36163 states. [2020-10-29 06:54:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36163 states to 36163 states and 40469 transitions. [2020-10-29 06:54:12,821 INFO L78 Accepts]: Start accepts. Automaton has 36163 states and 40469 transitions. Word has length 766 [2020-10-29 06:54:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:12,822 INFO L481 AbstractCegarLoop]: Abstraction has 36163 states and 40469 transitions. [2020-10-29 06:54:12,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 36163 states and 40469 transitions. [2020-10-29 06:54:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-10-29 06:54:12,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:12,862 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:12,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:54:12,862 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1247942383, now seen corresponding path program 1 times [2020-10-29 06:54:12,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:12,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468195663] [2020-10-29 06:54:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:17,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 597 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:54:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:54:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-29 06:54:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:54:18,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-29 06:54:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:54:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-29 06:54:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:54:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:54:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-10-29 06:54:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2457 backedges. 842 proven. 93 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2020-10-29 06:54:19,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468195663] [2020-10-29 06:54:19,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:19,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:19,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042287462] [2020-10-29 06:54:19,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:19,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:19,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:19,094 INFO L87 Difference]: Start difference. First operand 36163 states and 40469 transitions. Second operand 7 states. [2020-10-29 06:54:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:22,571 INFO L93 Difference]: Finished difference Result 72253 states and 80895 transitions. [2020-10-29 06:54:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:54:22,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 842 [2020-10-29 06:54:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:22,631 INFO L225 Difference]: With dead ends: 72253 [2020-10-29 06:54:22,632 INFO L226 Difference]: Without dead ends: 36284 [2020-10-29 06:54:22,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 06:54:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36284 states. [2020-10-29 06:54:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36284 to 35983. [2020-10-29 06:54:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35983 states. [2020-10-29 06:54:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35983 states to 35983 states and 39722 transitions. [2020-10-29 06:54:23,190 INFO L78 Accepts]: Start accepts. Automaton has 35983 states and 39722 transitions. Word has length 842 [2020-10-29 06:54:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:23,191 INFO L481 AbstractCegarLoop]: Abstraction has 35983 states and 39722 transitions. [2020-10-29 06:54:23,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 35983 states and 39722 transitions. [2020-10-29 06:54:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-29 06:54:23,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:23,230 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 06:54:23,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:54:23,230 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:23,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1220771581, now seen corresponding path program 1 times [2020-10-29 06:54:23,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:23,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98399857] [2020-10-29 06:54:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:28,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:28,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-29 06:54:28,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 495 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:54:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:28,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:54:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:28,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:28,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:54:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:28,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:54:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 06:54:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-29 06:54:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat