/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapavg2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:36,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:36,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:36,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:36,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:36,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:36,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:36,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:36,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:36,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:36,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:36,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:36,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:36,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:36,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:36,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:36,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:36,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:36,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:36,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:36,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:36,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:36,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:36,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:36,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:36,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:36,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:36,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:36,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:36,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:36,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:36,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:36,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:36,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:36,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:36,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:36,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:36,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:36,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:36,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:36,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:36,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:03:36,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:36,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:36,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:36,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:36,610 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:36,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:36,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:36,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:36,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:36,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:36,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:36,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:36,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:36,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:36,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:36,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:36,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:36,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:36,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:36,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:36,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:36,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:36,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:36,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:36,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:36,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:36,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:36,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:36,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:36,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:37,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:37,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:37,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:37,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:37,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:37,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-27 14:03:37,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7bf7d65/830975580ec547ce8c095b430f1e1b26/FLAGd6a47fe33 [2020-10-27 14:03:37,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:37,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-27 14:03:37,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7bf7d65/830975580ec547ce8c095b430f1e1b26/FLAGd6a47fe33 [2020-10-27 14:03:38,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7bf7d65/830975580ec547ce8c095b430f1e1b26 [2020-10-27 14:03:38,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:38,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:38,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:38,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:38,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:38,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276e0545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38, skipping insertion in model container [2020-10-27 14:03:38,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:38,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:38,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:38,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:38,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:38,628 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:38,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38 WrapperNode [2020-10-27 14:03:38,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:38,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:38,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:38,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:38,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... [2020-10-27 14:03:38,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:38,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:38,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:38,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:38,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-27 14:03:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-27 14:03:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:39,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:39,493 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:39,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:39 BoogieIcfgContainer [2020-10-27 14:03:39,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:39,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:39,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:39,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:39,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:38" (1/3) ... [2020-10-27 14:03:39,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235744cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:39, skipping insertion in model container [2020-10-27 14:03:39,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:38" (2/3) ... [2020-10-27 14:03:39,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235744cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:39, skipping insertion in model container [2020-10-27 14:03:39,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:39" (3/3) ... [2020-10-27 14:03:39,507 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg2.i [2020-10-27 14:03:39,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:39,526 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:39,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:39,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:39,573 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:39,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:39,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:39,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:39,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:39,574 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:39,574 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:03:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:39,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:39,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:39,606 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-27 14:03:39,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:39,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626836510] [2020-10-27 14:03:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:41,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:03:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-27 14:03:41,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:03:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:03:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:03:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:41,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:41,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:41,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626836510] [2020-10-27 14:03:41,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:41,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:41,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775164846] [2020-10-27 14:03:41,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:41,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:41,937 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:03:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:42,087 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:03:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:42,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:03:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:42,099 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:42,099 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:03:42,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:03:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:03:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:03:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:03:42,154 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:03:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:42,155 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:03:42,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:03:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:42,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:42,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:42,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:42,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1911757649, now seen corresponding path program 1 times [2020-10-27 14:03:42,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:42,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790633927] [2020-10-27 14:03:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:03:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-27 14:03:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:03:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:44,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:44,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:44,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:03:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:44,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:44,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:44,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:03:44,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:44,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:03:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:44,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790633927] [2020-10-27 14:03:44,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:44,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:44,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248053125] [2020-10-27 14:03:44,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:44,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:44,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:44,646 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:03:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:44,802 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:03:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:44,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:03:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:44,804 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:03:44,805 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:03:44,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:03:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:03:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:44,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:03:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:44,826 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:44,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:03:44,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:44,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:44,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:44,830 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1630607407, now seen corresponding path program 1 times [2020-10-27 14:03:44,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:44,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663791879] [2020-10-27 14:03:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:03:49,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:03:49,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:03:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:03:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:49,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:49,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:49,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:03:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:03:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:50,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 14:03:50,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:50,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:03:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:50,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:50,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:03:50,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:03:50,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663791879] [2020-10-27 14:03:50,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:50,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:50,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957806900] [2020-10-27 14:03:50,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:50,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:50,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:50,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:50,062 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:03:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:50,275 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:03:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:50,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:03:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:50,279 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:03:50,279 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:50,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:50,298 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:03:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:50,300 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:50,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:03:50,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:50,303 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:50,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:50,304 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:50,305 INFO L82 PathProgramCache]: Analyzing trace with hash 860862093, now seen corresponding path program 2 times [2020-10-27 14:03:50,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:50,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90006338] [2020-10-27 14:03:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:03:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:03:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:03:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:55,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 14:03:55,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:03:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 14:03:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:03:55,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:03:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90006338] [2020-10-27 14:03:55,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:55,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:55,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126661474] [2020-10-27 14:03:55,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:55,577 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:03:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:55,805 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:03:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:03:55,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:03:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:55,807 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:55,807 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:55,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:03:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:03:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:03:55,816 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:03:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:55,816 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:03:55,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:03:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:03:55,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:55,818 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:55,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:55,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:55,819 INFO L82 PathProgramCache]: Analyzing trace with hash -791718293, now seen corresponding path program 3 times [2020-10-27 14:03:55,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:55,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023087879] [2020-10-27 14:03:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:04:00,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:04:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:00,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:04:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:04:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 14:04:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:04:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:04:01,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 14:04:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:04:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:04:01,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:04:01,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:04:01,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023087879] [2020-10-27 14:04:01,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:01,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:04:01,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511199847] [2020-10-27 14:04:01,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:04:01,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:04:01,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:04:01,105 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:04:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:01,362 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:04:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:04:01,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:04:01,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:01,363 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:04:01,364 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:04:01,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:04:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:04:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:04:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:04:01,380 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:04:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:01,380 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:04:01,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:04:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:04:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:04:01,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:01,385 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:01,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:04:01,386 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash 717772745, now seen corresponding path program 4 times [2020-10-27 14:04:01,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:01,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541888809] [2020-10-27 14:04:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:04:06,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:04:06,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:04:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:06,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:06,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:04:06,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:04:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:04:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:04:06,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 14:04:06,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:04:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:04:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 14:04:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:04:06,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541888809] [2020-10-27 14:04:06,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:06,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:04:06,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874262075] [2020-10-27 14:04:06,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:04:06,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:04:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:04:06,739 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:04:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:07,019 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:04:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:04:07,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:04:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:07,022 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:04:07,022 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:04:07,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:04:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:04:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:04:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:04:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:04:07,039 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:04:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:07,039 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:04:07,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:04:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:04:07,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:04:07,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:07,044 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:07,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:04:07,044 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash 820714151, now seen corresponding path program 5 times [2020-10-27 14:04:07,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:07,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964111026] [2020-10-27 14:04:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:04:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:04:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:04:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 14:04:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:04:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:12,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 14:04:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:04:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:12,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 14:04:12,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:04:12,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964111026] [2020-10-27 14:04:12,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:12,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:04:12,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469134415] [2020-10-27 14:04:12,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:04:12,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:12,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:04:12,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:04:12,392 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:04:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:12,660 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:04:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:04:12,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:04:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:12,662 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:04:12,662 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:04:12,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:04:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:04:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:04:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:04:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:04:12,669 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:04:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:12,670 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:04:12,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:04:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:04:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:04:12,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:12,671 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:12,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:04:12,672 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1199570693, now seen corresponding path program 6 times [2020-10-27 14:04:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:12,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414761543] [2020-10-27 14:04:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:04:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 14:04:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:04:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:18,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 14:04:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:04:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:04:18,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414761543] [2020-10-27 14:04:18,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:18,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:04:18,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489212207] [2020-10-27 14:04:18,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:04:18,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:18,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:04:18,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:04:18,107 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:04:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:18,417 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:04:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:04:18,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:04:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:18,420 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:04:18,420 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:04:18,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:04:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:04:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:04:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:04:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:04:18,427 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:04:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:18,427 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:04:18,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:04:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:04:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:04:18,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:18,428 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:18,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:04:18,429 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1030186211, now seen corresponding path program 7 times [2020-10-27 14:04:18,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:18,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832478625] [2020-10-27 14:04:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:23,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:23,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:23,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:23,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 14:04:23,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:04:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 14:04:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:04:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:23,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:23,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 14:04:23,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:23,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:23,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:04:23,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832478625] [2020-10-27 14:04:23,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:23,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:04:23,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411614852] [2020-10-27 14:04:23,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:04:23,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:04:23,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:23,904 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:04:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:24,318 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:04:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:04:24,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:04:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:24,319 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:04:24,319 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:04:24,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:04:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:04:24,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:04:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:04:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:04:24,329 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:04:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:24,330 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:04:24,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:04:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:04:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:04:24,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:24,331 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:24,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:04:24,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1038504895, now seen corresponding path program 8 times [2020-10-27 14:04:24,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:24,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421691601] [2020-10-27 14:04:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:04:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 14:04:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:04:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:04:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:04:29,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421691601] [2020-10-27 14:04:29,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:29,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:04:29,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044988167] [2020-10-27 14:04:29,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:04:29,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:04:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:04:29,805 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:04:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:30,277 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:04:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:04:30,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:04:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:30,280 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:04:30,280 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:04:30,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:04:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:04:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:04:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:04:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:04:30,289 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:04:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:30,289 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:04:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:04:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:04:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:04:30,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:30,291 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:30,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:04:30,291 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:30,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:30,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1537684767, now seen corresponding path program 9 times [2020-10-27 14:04:30,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:30,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298456470] [2020-10-27 14:04:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:04:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:04:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:04:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:04:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:04:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:04:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:35,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 81 proven. 611 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 14:04:35,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298456470] [2020-10-27 14:04:35,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:35,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:04:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984608259] [2020-10-27 14:04:35,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:04:35,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:35,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:04:35,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:04:35,812 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-27 14:04:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:36,392 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-27 14:04:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:04:36,392 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2020-10-27 14:04:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:36,396 INFO L225 Difference]: With dead ends: 86 [2020-10-27 14:04:36,396 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:04:36,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:04:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:04:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-27 14:04:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:04:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-27 14:04:36,409 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 88 [2020-10-27 14:04:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:36,410 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-27 14:04:36,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:04:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-27 14:04:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 14:04:36,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:36,411 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:36,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:04:36,411 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash -406586885, now seen corresponding path program 1 times [2020-10-27 14:04:36,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:36,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296169923] [2020-10-27 14:04:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:36,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:41,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 14:04:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:04:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:04:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 14:04:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:04:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:04:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:04:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:04:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:04:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 100 proven. 749 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-27 14:04:42,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296169923] [2020-10-27 14:04:42,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:42,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:04:42,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563263441] [2020-10-27 14:04:42,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:04:42,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:42,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:04:42,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:04:42,037 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 16 states. [2020-10-27 14:04:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:42,693 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-10-27 14:04:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:04:42,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-10-27 14:04:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:42,695 INFO L225 Difference]: With dead ends: 93 [2020-10-27 14:04:42,695 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:04:42,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=463, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:04:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:04:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:04:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:04:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:04:42,703 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 96 [2020-10-27 14:04:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:42,704 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:04:42,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:04:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:04:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:04:42,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:42,705 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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, 1, 1, 1] [2020-10-27 14:04:42,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:04:42,705 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:42,706 INFO L82 PathProgramCache]: Analyzing trace with hash -7992873, now seen corresponding path program 2 times [2020-10-27 14:04:42,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:42,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147789155] [2020-10-27 14:04:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:04:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:47,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:47,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:47,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:47,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 14:04:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:48,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:04:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:04:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:04:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 121 proven. 903 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:04:48,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147789155] [2020-10-27 14:04:48,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:48,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:04:48,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841860153] [2020-10-27 14:04:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:04:48,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:48,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:04:48,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:04:48,788 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:04:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:49,455 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:04:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:04:49,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-27 14:04:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:49,457 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:04:49,457 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:04:49,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=588, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:04:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:04:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:04:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:04:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:04:49,473 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 104 [2020-10-27 14:04:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:49,473 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:04:49,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:04:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:04:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:04:49,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:49,475 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:49,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:04:49,475 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:49,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1611408563, now seen corresponding path program 3 times [2020-10-27 14:04:49,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:49,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562101932] [2020-10-27 14:04:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:54,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:54,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:04:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:04:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:55,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 14:04:55,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:04:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:55,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 144 proven. 1073 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:04:55,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562101932] [2020-10-27 14:04:55,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:55,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:04:55,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17444272] [2020-10-27 14:04:55,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:04:55,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:55,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:04:55,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:04:55,408 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:04:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:56,212 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:04:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:04:56,213 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 112 [2020-10-27 14:04:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:56,214 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:04:56,214 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:04:56,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:04:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:04:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:04:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:04:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:04:56,223 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 112 [2020-10-27 14:04:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:56,223 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:04:56,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:04:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:04:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 14:04:56,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:56,224 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:56,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:04:56,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:56,225 INFO L82 PathProgramCache]: Analyzing trace with hash 988088975, now seen corresponding path program 4 times [2020-10-27 14:04:56,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:56,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463088857] [2020-10-27 14:04:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:05:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:05:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:05:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:05:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:05:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:02,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:05:02,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:02,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 14:05:02,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:05:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1630 backedges. 169 proven. 1259 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:05:02,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463088857] [2020-10-27 14:05:02,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:02,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:05:02,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909868576] [2020-10-27 14:05:02,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:05:02,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:02,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:05:02,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:05:02,140 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:05:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:02,928 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:05:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:05:02,929 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 120 [2020-10-27 14:05:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:02,930 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:05:02,930 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:05:02,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=880, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:05:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:05:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:05:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:05:02,952 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 120 [2020-10-27 14:05:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:02,952 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:05:02,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:05:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:05:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 14:05:02,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:02,954 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:02,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:05:02,954 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash 571439979, now seen corresponding path program 5 times [2020-10-27 14:05:02,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:02,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667277833] [2020-10-27 14:05:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:05:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:05:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:05:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:05:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:05:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:05:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:05:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:05:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 196 proven. 1461 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:05:08,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667277833] [2020-10-27 14:05:08,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:08,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:05:08,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142826422] [2020-10-27 14:05:08,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:05:08,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:08,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:05:08,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:05:08,994 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:05:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:09,911 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:05:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:05:09,912 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 128 [2020-10-27 14:05:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:09,913 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:05:09,913 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:05:09,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=1047, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:05:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:05:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:05:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:05:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:05:09,926 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 128 [2020-10-27 14:05:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:09,926 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:05:09,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:05:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:05:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:05:09,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:09,929 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:09,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:05:09,930 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash -201705657, now seen corresponding path program 6 times [2020-10-27 14:05:09,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:09,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239027189] [2020-10-27 14:05:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:05:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:05:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:05:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 14:05:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:05:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:05:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:05:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 14:05:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:05:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:05:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2166 backedges. 225 proven. 1679 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:05:16,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239027189] [2020-10-27 14:05:16,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:16,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:05:16,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486266835] [2020-10-27 14:05:16,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:05:16,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:16,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:05:16,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:05:16,101 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:05:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:17,152 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:05:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:05:17,153 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 136 [2020-10-27 14:05:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:17,154 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:05:17,154 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:05:17,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=494, Invalid=1228, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:05:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:05:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:05:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:05:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:05:17,175 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 136 [2020-10-27 14:05:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:17,176 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:05:17,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:05:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:05:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 14:05:17,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:17,178 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:17,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:05:17,179 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:17,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:17,180 INFO L82 PathProgramCache]: Analyzing trace with hash -947651037, now seen corresponding path program 7 times [2020-10-27 14:05:17,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:17,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67428311] [2020-10-27 14:05:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:05:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:05:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:23,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:05:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:05:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2464 backedges. 256 proven. 1913 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:05:23,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67428311] [2020-10-27 14:05:23,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:23,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:05:23,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421791454] [2020-10-27 14:05:23,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:05:23,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:23,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:05:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:05:23,463 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:05:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:24,629 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:05:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:05:24,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 144 [2020-10-27 14:05:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:24,631 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:05:24,631 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:05:24,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=557, Invalid=1423, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:05:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:05:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:05:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:05:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:05:24,641 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 144 [2020-10-27 14:05:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:24,642 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:05:24,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:05:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:05:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 14:05:24,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:24,643 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:24,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:05:24,644 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash -671379457, now seen corresponding path program 8 times [2020-10-27 14:05:24,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:24,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937885448] [2020-10-27 14:05:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:29,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 14:05:29,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:05:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:29,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:30,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:05:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:05:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:05:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2782 backedges. 289 proven. 2163 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:05:31,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937885448] [2020-10-27 14:05:31,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:31,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:05:31,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611634946] [2020-10-27 14:05:31,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:05:31,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:31,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:05:31,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:05:31,159 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:05:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:32,415 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:05:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:05:32,417 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 152 [2020-10-27 14:05:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:32,418 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:05:32,418 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:05:32,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=624, Invalid=1632, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:05:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:05:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:05:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:05:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:05:32,434 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 152 [2020-10-27 14:05:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:32,436 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:05:32,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:05:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:05:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 14:05:32,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:32,440 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:32,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:05:32,441 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1897901275, now seen corresponding path program 9 times [2020-10-27 14:05:32,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:32,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971960337] [2020-10-27 14:05:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:05:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 14:05:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:05:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:38,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:38,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:05:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 14:05:39,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:05:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 324 proven. 2429 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:05:39,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971960337] [2020-10-27 14:05:39,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:39,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:05:39,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5797032] [2020-10-27 14:05:39,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:05:39,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:05:39,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:05:39,084 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:05:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:40,379 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:05:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:05:40,380 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 160 [2020-10-27 14:05:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:40,381 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:05:40,381 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:05:40,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=695, Invalid=1855, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:05:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:05:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:05:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:05:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:05:40,397 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 160 [2020-10-27 14:05:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:40,397 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:05:40,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:05:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:05:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 14:05:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:40,400 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:40,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:05:40,400 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:40,401 INFO L82 PathProgramCache]: Analyzing trace with hash -618720073, now seen corresponding path program 10 times [2020-10-27 14:05:40,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:40,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248342814] [2020-10-27 14:05:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 14:05:45,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 14:05:45,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:05:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:05:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:05:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:45,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:05:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:05:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:05:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 361 proven. 2711 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:05:47,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248342814] [2020-10-27 14:05:47,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:47,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:05:47,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101003874] [2020-10-27 14:05:47,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:05:47,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:05:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:05:47,444 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:05:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:48,903 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:05:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:05:48,905 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 168 [2020-10-27 14:05:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:48,906 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:05:48,906 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:05:48,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=770, Invalid=2092, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:05:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:05:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:05:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:05:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:05:48,917 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 168 [2020-10-27 14:05:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:05:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:05:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:05:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 14:05:48,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:48,923 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:48,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:05:48,925 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1184401299, now seen corresponding path program 11 times [2020-10-27 14:05:48,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379139133] [2020-10-27 14:05:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:05:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:54,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:54,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:05:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:55,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:55,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-27 14:05:55,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:05:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:56,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:56,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 400 proven. 3009 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:05:56,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379139133] [2020-10-27 14:05:56,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:56,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:05:56,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061048425] [2020-10-27 14:05:56,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:05:56,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:05:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:56,203 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:05:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:57,803 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:05:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:05:57,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 176 [2020-10-27 14:05:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:57,807 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:05:57,807 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:05:57,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=849, Invalid=2343, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:05:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:05:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:05:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:05:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:05:57,818 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 176 [2020-10-27 14:05:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:57,819 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:05:57,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:05:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:05:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 14:05:57,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:57,822 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:57,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:05:57,822 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1197816465, now seen corresponding path program 12 times [2020-10-27 14:05:57,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:57,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685815295] [2020-10-27 14:05:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:02,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 14:06:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:06:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:06:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:06:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:06:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:03,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:06:03,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:03,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:06:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:06:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:06:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:06:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:06:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4254 backedges. 441 proven. 3323 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:06:05,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685815295] [2020-10-27 14:06:05,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:05,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:06:05,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495911278] [2020-10-27 14:06:05,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:06:05,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:06:05,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1024, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:06:05,095 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:06:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:06,777 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:06:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:06:06,778 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 184 [2020-10-27 14:06:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:06,779 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:06:06,779 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:06:06,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=932, Invalid=2608, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:06:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:06:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:06:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:06:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:06:06,788 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 184 [2020-10-27 14:06:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:06,788 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:06:06,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:06:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:06:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 14:06:06,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:06,790 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:06,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:06:06,790 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:06,791 INFO L82 PathProgramCache]: Analyzing trace with hash -156987829, now seen corresponding path program 13 times [2020-10-27 14:06:06,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:06,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350119828] [2020-10-27 14:06:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:06:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:12,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:06:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:06:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:13,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:06:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:06:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 14:06:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:06:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4672 backedges. 484 proven. 3653 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:06:14,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350119828] [2020-10-27 14:06:14,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:14,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:06:14,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216920661] [2020-10-27 14:06:14,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:06:14,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:14,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:06:14,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1139, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:06:14,283 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:06:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:16,080 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:06:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:06:16,080 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 192 [2020-10-27 14:06:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:16,082 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:06:16,082 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:06:16,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1019, Invalid=2887, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 14:06:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:06:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:06:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:06:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:06:16,094 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 192 [2020-10-27 14:06:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:16,095 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:06:16,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:06:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:06:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 14:06:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:16,099 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:16,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:06:16,101 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1923392039, now seen corresponding path program 14 times [2020-10-27 14:06:16,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:16,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116013200] [2020-10-27 14:06:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:21,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 14:06:21,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:21,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:21,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:06:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:06:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-27 14:06:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:06:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:06:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5110 backedges. 529 proven. 3999 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:06:23,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116013200] [2020-10-27 14:06:23,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:23,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:06:23,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851900807] [2020-10-27 14:06:23,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:06:23,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:06:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:06:23,852 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:06:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:25,677 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:06:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:06:25,678 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 200 [2020-10-27 14:06:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:25,679 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:06:25,679 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:06:25,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 14:06:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:06:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:06:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:06:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:06:25,688 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 200 [2020-10-27 14:06:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:25,688 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:06:25,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:06:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:06:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 14:06:25,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:25,690 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:25,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:06:25,690 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:25,690 INFO L82 PathProgramCache]: Analyzing trace with hash 922337539, now seen corresponding path program 15 times [2020-10-27 14:06:25,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:25,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019510882] [2020-10-27 14:06:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:06:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:06:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:06:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:31,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 14:06:31,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:06:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:32,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 14:06:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 576 proven. 4361 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:06:33,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019510882] [2020-10-27 14:06:33,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:33,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:06:33,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110190713] [2020-10-27 14:06:33,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:06:33,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:33,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:06:33,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:06:33,643 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:06:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:35,494 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:06:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:06:35,495 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 208 [2020-10-27 14:06:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:35,496 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:06:35,497 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:06:35,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1205, Invalid=3487, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 14:06:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:06:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:06:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:06:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:06:35,506 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 208 [2020-10-27 14:06:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:35,506 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:06:35,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:06:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:06:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 14:06:35,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:35,508 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:35,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:06:35,508 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash -764237089, now seen corresponding path program 16 times [2020-10-27 14:06:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306435646] [2020-10-27 14:06:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 14:06:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:06:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:40,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:40,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:40,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:40,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:40,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:42,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:06:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:06:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:43,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-27 14:06:43,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:06:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6046 backedges. 625 proven. 4739 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:06:43,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306435646] [2020-10-27 14:06:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:43,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:06:43,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76627573] [2020-10-27 14:06:43,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:06:43,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:43,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:06:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:06:43,544 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:06:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:45,641 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:06:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:06:45,642 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 216 [2020-10-27 14:06:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:45,643 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:06:45,643 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:06:45,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1304, Invalid=3808, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 14:06:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:06:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:06:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:06:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:06:45,654 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 216 [2020-10-27 14:06:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:45,654 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:06:45,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:06:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:06:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 14:06:45,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:45,656 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:45,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:06:45,656 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1145970619, now seen corresponding path program 17 times [2020-10-27 14:06:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:45,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259545058] [2020-10-27 14:06:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:50,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:50,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 14:06:50,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:06:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:51,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:06:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-27 14:06:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:06:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-27 14:06:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 14:06:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6544 backedges. 676 proven. 5133 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:06:54,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259545058] [2020-10-27 14:06:54,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:54,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:06:54,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898976057] [2020-10-27 14:06:54,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:06:54,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:54,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:06:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:06:54,057 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:06:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:56,286 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:06:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:06:56,287 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 224 [2020-10-27 14:06:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:56,288 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:06:56,289 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:06:56,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1407, Invalid=4143, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 14:06:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:06:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:06:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:06:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:06:56,298 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 224 [2020-10-27 14:06:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:56,298 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:06:56,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:06:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:06:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 14:06:56,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:56,300 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:56,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:06:56,300 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:56,301 INFO L82 PathProgramCache]: Analyzing trace with hash -398794857, now seen corresponding path program 18 times [2020-10-27 14:06:56,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:56,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472302821] [2020-10-27 14:06:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:07:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:07:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:07:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:07:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:07:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 14:07:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:07:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7062 backedges. 729 proven. 5543 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:07:04,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472302821] [2020-10-27 14:07:04,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:04,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:07:04,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711506598] [2020-10-27 14:07:04,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:07:04,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:07:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=1804, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:07:04,769 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:07:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:07,216 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:07:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:07:07,217 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 232 [2020-10-27 14:07:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:07,218 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:07:07,218 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:07:07,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1514, Invalid=4492, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 14:07:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:07:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:07:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:07:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:07:07,229 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 232 [2020-10-27 14:07:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:07,229 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:07:07,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:07:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:07:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-27 14:07:07,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:07,232 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:07,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:07:07,232 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:07,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:07,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1649912435, now seen corresponding path program 19 times [2020-10-27 14:07:07,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:07,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171566418] [2020-10-27 14:07:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:12,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-27 14:07:12,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:12,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 14:07:12,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:07:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:07:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:07:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:07:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:07:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:15,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:07:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:15,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 14:07:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:07:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7600 backedges. 784 proven. 5969 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:07:16,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171566418] [2020-10-27 14:07:16,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:16,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:07:16,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775098384] [2020-10-27 14:07:16,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:07:16,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:16,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:07:16,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=1955, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:07:16,278 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:07:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:19,052 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:07:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:07:19,053 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 240 [2020-10-27 14:07:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:19,055 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:07:19,055 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:07:19,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1625, Invalid=4855, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 14:07:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:07:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:07:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:07:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:07:19,065 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 240 [2020-10-27 14:07:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:19,065 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:07:19,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:07:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:07:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-27 14:07:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:19,067 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:19,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:07:19,067 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1959575473, now seen corresponding path program 20 times [2020-10-27 14:07:19,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:19,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749954171] [2020-10-27 14:07:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking...