/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:10:06,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:10:06,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:10:06,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:10:06,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:10:06,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:10:06,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:10:06,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:10:06,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:10:06,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:10:06,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:10:06,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:10:06,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:10:06,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:10:06,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:10:06,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:10:06,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:10:06,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:10:06,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:10:06,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:10:06,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:10:06,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:10:06,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:10:06,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:10:06,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:10:06,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:10:06,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:10:06,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:10:06,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:10:06,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:10:06,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:10:06,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:10:06,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:10:06,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:10:06,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:10:06,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:10:06,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:10:06,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:10:06,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:10:06,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:10:06,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:10:06,700 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 04:10:06,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:10:06,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:10:06,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:10:06,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:10:06,763 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:10:06,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:10:06,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:10:06,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:10:06,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:10:06,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:10:06,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:10:06,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:10:06,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:10:06,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:10:06,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:10:06,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:10:06,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:10:06,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:10:06,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:10:06,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:10:06,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:10:06,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:10:06,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:10:06,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:10:06,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:10:06,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:10:06,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:10:06,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:10:06,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:10:06,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:10:07,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:10:07,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:10:07,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:10:07,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:10:07,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:10:07,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-27 04:10:07,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4228f3b39/4f7bb98c00514a41a6758b3432f70c8b/FLAG997e5847e [2020-10-27 04:10:07,976 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:10:07,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-27 04:10:07,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4228f3b39/4f7bb98c00514a41a6758b3432f70c8b/FLAG997e5847e [2020-10-27 04:10:08,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4228f3b39/4f7bb98c00514a41a6758b3432f70c8b [2020-10-27 04:10:08,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:10:08,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:10:08,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:08,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:10:08,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:10:08,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7499832e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08, skipping insertion in model container [2020-10-27 04:10:08,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:10:08,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:10:08,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:08,640 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:10:08,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:08,713 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:10:08,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08 WrapperNode [2020-10-27 04:10:08,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:08,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:10:08,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:10:08,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:10:08,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (1/1) ... [2020-10-27 04:10:08,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:10:08,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:10:08,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:10:08,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:10:08,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (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 04:10:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:10:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:10:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:10:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-27 04:10:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:10:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:10:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:10:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:10:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:10:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:10:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:10:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:10:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:10:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:10:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:10:09,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:10:09,326 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:10:09,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:09 BoogieIcfgContainer [2020-10-27 04:10:09,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:10:09,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:10:09,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:10:09,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:10:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:10:08" (1/3) ... [2020-10-27 04:10:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1728a359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:09, skipping insertion in model container [2020-10-27 04:10:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:08" (2/3) ... [2020-10-27 04:10:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1728a359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:09, skipping insertion in model container [2020-10-27 04:10:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:09" (3/3) ... [2020-10-27 04:10:09,337 INFO L111 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2020-10-27 04:10:09,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:10:09,355 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:10:09,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:10:09,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:10:09,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:10:09,398 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:10:09,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:10:09,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:10:09,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:10:09,412 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:10:09,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:10:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:10:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:10:09,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:09,443 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 04:10:09,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:09,450 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 04:10:09,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:09,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866346707] [2020-10-27 04:10:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:11,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:10:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-27 04:10:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:10:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:10:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:11,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:11,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:11,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:10:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:10:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:10:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:11,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:11,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:11,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:11,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:11,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:10:11,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:11,687 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 04:10:11,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866346707] [2020-10-27 04:10:11,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:11,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:10:11,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739792404] [2020-10-27 04:10:11,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:10:11,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:10:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:10:11,713 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:10:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:11,817 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:10:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:10:11,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:10:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:11,828 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:10:11,828 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:10:11,832 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 04:10:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:10:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:10:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:10:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:10:11,879 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:10:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:11,880 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:10:11,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:10:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:10:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:10:11,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:11,883 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 04:10:11,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:10:11,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 04:10:11,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:11,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561147367] [2020-10-27 04:10:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:11,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:10:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2446 [2020-10-27 04:10:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:10:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:10:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:10:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:14,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:14,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:10:14,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:10:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:14,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:14,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:10:14,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:14,532 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 04:10:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561147367] [2020-10-27 04:10:14,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:14,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:10:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895077903] [2020-10-27 04:10:14,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:10:14,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:14,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:10:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:10:14,540 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:10:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:14,705 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:10:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:10:14,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:10:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:14,707 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:10:14,707 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:10:14,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:10:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:10:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:10:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:10:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:10:14,718 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:10:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:14,718 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:10:14,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:10:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:10:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:10:14,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:14,720 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, 1, 1] [2020-10-27 04:10:14,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:10:14,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1648388849, now seen corresponding path program 1 times [2020-10-27 04:10:14,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:14,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181910110] [2020-10-27 04:10:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:10:19,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:19,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:10:19,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:10:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:10:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:10:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:10:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:10:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:10:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:10:19,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:10:19,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181910110] [2020-10-27 04:10:19,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:19,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:10:19,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902749740] [2020-10-27 04:10:19,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:10:19,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:10:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:10:19,991 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:10:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:20,220 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:10:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:10:20,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:10:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:20,222 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:10:20,223 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:10:20,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:20,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:10:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:10:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:10:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:10:20,237 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:10:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:20,237 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:10:20,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:10:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:10:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:10:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:20,241 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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 04:10:20,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:10:20,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 60514641, now seen corresponding path program 2 times [2020-10-27 04:10:20,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:20,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95945502] [2020-10-27 04:10:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:10:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:10:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:25,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:10:25,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:10:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:10:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:10:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:10:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:10:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:10:25,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95945502] [2020-10-27 04:10:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:10:25,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138543179] [2020-10-27 04:10:25,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:10:25,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:10:25,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:25,572 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:10:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:25,842 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:10:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:10:25,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:10:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:25,844 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:10:25,844 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:10:25,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:10:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:10:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:10:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:10:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:10:25,860 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:10:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:25,860 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:10:25,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:10:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:10:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:10:25,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:25,862 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 04:10:25,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:10:25,863 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:25,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2107559345, now seen corresponding path program 3 times [2020-10-27 04:10:25,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:25,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596788656] [2020-10-27 04:10:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:10:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:30,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:10:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:31,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:31,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:31,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:10:31,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:10:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:10:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:10:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:10:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:10:31,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596788656] [2020-10-27 04:10:31,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:31,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:10:31,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880941142] [2020-10-27 04:10:31,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:10:31,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:10:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:10:31,219 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:10:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:31,487 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:10:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:10:31,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:10:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:31,489 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:10:31,489 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:10:31,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:10:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:10:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:10:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:10:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:10:31,497 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:10:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:31,498 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:10:31,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:10:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:10:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:10:31,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:31,499 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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 04:10:31,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:10:31,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash -844910575, now seen corresponding path program 4 times [2020-10-27 04:10:31,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:31,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905697003] [2020-10-27 04:10:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:10:36,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:10:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:36,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:10:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:10:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:10:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:10:36,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:10:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:36,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:10:36,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905697003] [2020-10-27 04:10:36,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:36,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:10:36,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645105607] [2020-10-27 04:10:36,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:10:36,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:10:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:10:36,908 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:10:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:37,213 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:10:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:10:37,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:10:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:37,215 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:10:37,215 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:10:37,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:10:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:10:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:10:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:10:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:10:37,223 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:10:37,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:37,223 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:10:37,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:10:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:10:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:10:37,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:37,225 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 04:10:37,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:10:37,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:37,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1264383887, now seen corresponding path program 5 times [2020-10-27 04:10:37,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:37,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403399734] [2020-10-27 04:10:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:10:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:10:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:42,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:10:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:10:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:42,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:42,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:42,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:10:42,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403399734] [2020-10-27 04:10:42,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:42,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:10:42,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626132331] [2020-10-27 04:10:42,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:10:42,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:10:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:10:42,643 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:10:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:43,006 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:10:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:10:43,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:10:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:43,008 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:10:43,008 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:10:43,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:10:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:10:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:10:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:10:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:10:43,016 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:10:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:43,016 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:10:43,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:10:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:10:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:10:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:43,018 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 04:10:43,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:10:43,018 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash -952772911, now seen corresponding path program 6 times [2020-10-27 04:10:43,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:43,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089439518] [2020-10-27 04:10:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:10:48,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 04:10:48,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:10:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:10:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:48,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:10:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:10:48,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089439518] [2020-10-27 04:10:48,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:48,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:10:48,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871361465] [2020-10-27 04:10:48,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:10:48,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:48,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:10:48,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:10:48,573 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:10:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:49,004 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:10:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:10:49,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:10:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:49,006 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:10:49,006 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:10:49,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:10:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:10:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:10:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:10:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:10:49,015 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:10:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:49,015 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:10:49,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:10:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:10:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:10:49,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:49,017 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 04:10:49,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:10:49,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2106923825, now seen corresponding path program 7 times [2020-10-27 04:10:49,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:49,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712801277] [2020-10-27 04:10:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:10:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:54,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:54,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:10:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:10:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:10:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:10:54,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712801277] [2020-10-27 04:10:54,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:54,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:10:54,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228480796] [2020-10-27 04:10:54,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:10:54,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:54,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:10:54,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:10:54,527 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:10:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:54,960 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:10:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:10:54,960 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:10:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:54,962 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:10:54,962 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:10:54,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:10:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:10:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:10:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:10:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:10:54,983 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:10:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:54,984 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:10:54,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:10:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:10:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:10:54,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:54,988 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 04:10:54,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:10:54,988 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:54,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1134155153, now seen corresponding path program 8 times [2020-10-27 04:10:54,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:54,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80874520] [2020-10-27 04:10:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:00,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:00,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:00,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 04:11:00,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:11:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:11:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:11:00,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80874520] [2020-10-27 04:11:00,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:00,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:11:00,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286988201] [2020-10-27 04:11:00,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:11:00,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:00,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:11:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:11:00,586 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:11:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:01,114 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:11:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:11:01,115 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:11:01,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:01,116 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:11:01,116 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:11:01,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:11:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:11:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:11:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:11:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:11:01,126 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:11:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:01,126 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:11:01,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:11:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:11:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:11:01,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:01,128 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 04:11:01,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:11:01,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2000878095, now seen corresponding path program 9 times [2020-10-27 04:11:01,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:01,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69960296] [2020-10-27 04:11:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:06,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:06,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:11:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:06,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 04:11:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:11:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:06,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:06,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:06,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:11:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:11:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69960296] [2020-10-27 04:11:06,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:06,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:11:06,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292114125] [2020-10-27 04:11:06,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:11:06,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:06,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:11:06,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:11:06,769 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:11:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:07,282 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-27 04:11:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:11:07,283 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:11:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:07,284 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:11:07,284 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:11:07,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:11:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:11:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-27 04:11:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:11:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:11:07,306 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:11:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:07,309 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:11:07,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:11:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:11:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:11:07,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:07,313 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 04:11:07,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:11:07,313 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash -803754927, now seen corresponding path program 10 times [2020-10-27 04:11:07,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:07,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371916607] [2020-10-27 04:11:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:12,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:11:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:11:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:12,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:12,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 04:11:12,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:11:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:13,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 300 proven. 700 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:11:13,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371916607] [2020-10-27 04:11:13,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:13,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:11:13,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195897132] [2020-10-27 04:11:13,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:11:13,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:13,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:11:13,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:11:13,055 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 25 states. [2020-10-27 04:11:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:13,580 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-27 04:11:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:11:13,580 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-27 04:11:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:13,582 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:11:13,582 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:11:13,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:11:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:11:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-27 04:11:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:11:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-27 04:11:13,605 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 114 [2020-10-27 04:11:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:13,605 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-27 04:11:13,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:11:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-27 04:11:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:11:13,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:13,607 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 04:11:13,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:11:13,607 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:13,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1067267919, now seen corresponding path program 11 times [2020-10-27 04:11:13,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:13,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868593462] [2020-10-27 04:11:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:11:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:11:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:18,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:11:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:11:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:11:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 363 proven. 847 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 04:11:19,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868593462] [2020-10-27 04:11:19,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:19,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:11:19,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897848937] [2020-10-27 04:11:19,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:11:19,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:11:19,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:11:19,338 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 27 states. [2020-10-27 04:11:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:20,000 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-27 04:11:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:11:20,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 122 [2020-10-27 04:11:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:20,002 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:11:20,002 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:11:20,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:11:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:11:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 04:11:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 04:11:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-27 04:11:20,022 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 122 [2020-10-27 04:11:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:20,024 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-27 04:11:20,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:11:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-27 04:11:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:11:20,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:20,029 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 04:11:20,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:11:20,029 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:20,030 INFO L82 PathProgramCache]: Analyzing trace with hash 871848721, now seen corresponding path program 12 times [2020-10-27 04:11:20,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:20,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899778163] [2020-10-27 04:11:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:11:25,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:11:25,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:11:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:25,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:11:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:11:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 432 proven. 1008 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:11:25,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899778163] [2020-10-27 04:11:25,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:25,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:11:25,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897826950] [2020-10-27 04:11:25,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:11:25,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:11:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:11:25,878 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 29 states. [2020-10-27 04:11:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:26,681 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-27 04:11:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:11:26,682 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-10-27 04:11:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:26,683 INFO L225 Difference]: With dead ends: 123 [2020-10-27 04:11:26,683 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:11:26,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:11:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:11:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-27 04:11:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 04:11:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-27 04:11:26,695 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 130 [2020-10-27 04:11:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:26,695 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-27 04:11:26,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:11:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-27 04:11:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 04:11:26,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:26,697 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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 04:11:26,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:11:26,697 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1221485425, now seen corresponding path program 13 times [2020-10-27 04:11:26,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:26,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439255102] [2020-10-27 04:11:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:11:31,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:11:31,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:11:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:32,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 04:11:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:11:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:11:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:11:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 507 proven. 1183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 04:11:32,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439255102] [2020-10-27 04:11:32,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:32,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:11:32,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875254733] [2020-10-27 04:11:32,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:11:32,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:11:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:11:32,582 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 31 states. [2020-10-27 04:11:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:33,409 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-27 04:11:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:11:33,410 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-27 04:11:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:33,411 INFO L225 Difference]: With dead ends: 129 [2020-10-27 04:11:33,411 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:11:33,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:11:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:11:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-27 04:11:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:11:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 04:11:33,431 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 138 [2020-10-27 04:11:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:33,432 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 04:11:33,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:11:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 04:11:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:11:33,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:33,434 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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 04:11:33,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:11:33,436 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1887494609, now seen corresponding path program 14 times [2020-10-27 04:11:33,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:33,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219786900] [2020-10-27 04:11:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:11:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 04:11:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:11:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:38,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 04:11:38,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:11:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 04:11:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 588 proven. 1372 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:11:39,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219786900] [2020-10-27 04:11:39,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:39,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:11:39,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235960392] [2020-10-27 04:11:39,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:11:39,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:11:39,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:11:39,423 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 33 states. [2020-10-27 04:11:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:40,303 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-27 04:11:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:11:40,305 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-27 04:11:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:40,306 INFO L225 Difference]: With dead ends: 135 [2020-10-27 04:11:40,306 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 04:11:40,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:11:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 04:11:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-27 04:11:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:11:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-27 04:11:40,319 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 146 [2020-10-27 04:11:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:40,320 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-27 04:11:40,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:11:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-27 04:11:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:11:40,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:40,324 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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 04:11:40,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:11:40,325 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2142775759, now seen corresponding path program 15 times [2020-10-27 04:11:40,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:40,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495602160] [2020-10-27 04:11:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:45,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:45,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:45,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:11:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:11:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:11:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:11:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 675 proven. 1575 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:11:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495602160] [2020-10-27 04:11:46,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:46,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:11:46,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784135943] [2020-10-27 04:11:46,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:11:46,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:11:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:11:46,466 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 35 states. [2020-10-27 04:11:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:47,444 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-27 04:11:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:11:47,445 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-27 04:11:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:47,446 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:11:47,446 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:11:47,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:11:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:11:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-27 04:11:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 04:11:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-27 04:11:47,454 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 154 [2020-10-27 04:11:47,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:47,455 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-27 04:11:47,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:11:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-27 04:11:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:11:47,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:47,457 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 04:11:47,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:11:47,457 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:47,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1057210223, now seen corresponding path program 16 times [2020-10-27 04:11:47,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:47,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698786663] [2020-10-27 04:11:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:11:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:11:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:11:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:11:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 768 proven. 1792 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:11:53,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698786663] [2020-10-27 04:11:53,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:53,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:11:53,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156374417] [2020-10-27 04:11:53,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:11:53,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:53,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:11:53,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:11:53,859 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 37 states. [2020-10-27 04:11:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:54,831 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-27 04:11:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:11:54,831 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 162 [2020-10-27 04:11:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:54,833 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:11:54,833 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 04:11:54,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:11:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 04:11:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 04:11:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:11:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-27 04:11:54,843 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 162 [2020-10-27 04:11:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:54,844 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-27 04:11:54,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:11:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-27 04:11:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 04:11:54,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:54,846 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 04:11:54,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:11:54,846 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:54,847 INFO L82 PathProgramCache]: Analyzing trace with hash -15261455, now seen corresponding path program 17 times [2020-10-27 04:11:54,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:54,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034553169] [2020-10-27 04:11:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:11:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:00,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:00,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:12:00,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:12:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:12:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:00,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:12:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:01,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:01,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 04:12:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:12:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:12:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 04:12:01,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 867 proven. 2023 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-27 04:12:01,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034553169] [2020-10-27 04:12:01,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:01,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:12:01,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768395082] [2020-10-27 04:12:01,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:12:01,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:01,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:12:01,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:12:01,321 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 39 states. [2020-10-27 04:12:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:02,542 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-27 04:12:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:12:02,543 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 170 [2020-10-27 04:12:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:02,544 INFO L225 Difference]: With dead ends: 153 [2020-10-27 04:12:02,544 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 04:12:02,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:12:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 04:12:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-27 04:12:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 04:12:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-27 04:12:02,553 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 170 [2020-10-27 04:12:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:02,553 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-27 04:12:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:12:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-27 04:12:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 04:12:02,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:02,556 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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 04:12:02,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:12:02,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:02,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1699645615, now seen corresponding path program 18 times [2020-10-27 04:12:02,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:02,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32632789] [2020-10-27 04:12:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 04:12:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:12:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:08,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 04:12:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:12:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:08,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 04:12:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:12:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:12:09,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 04:12:09,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 972 proven. 2268 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:12:09,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32632789] [2020-10-27 04:12:09,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:09,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:12:09,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259499354] [2020-10-27 04:12:09,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:12:09,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:12:09,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:12:09,147 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 41 states. [2020-10-27 04:12:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:10,480 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-27 04:12:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:12:10,481 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 178 [2020-10-27 04:12:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:10,482 INFO L225 Difference]: With dead ends: 159 [2020-10-27 04:12:10,482 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:12:10,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:12:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:12:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-27 04:12:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 04:12:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-27 04:12:10,491 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 178 [2020-10-27 04:12:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:10,492 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-27 04:12:10,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:12:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-27 04:12:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 04:12:10,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:10,493 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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 04:12:10,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:12:10,494 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1752939599, now seen corresponding path program 19 times [2020-10-27 04:12:10,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:10,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230757625] [2020-10-27 04:12:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:15,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:12:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:12:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:16,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:12:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1083 proven. 2527 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 04:12:17,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230757625] [2020-10-27 04:12:17,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:17,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:12:17,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677478732] [2020-10-27 04:12:17,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:12:17,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:17,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:12:17,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:12:17,302 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 43 states. [2020-10-27 04:12:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:18,670 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-10-27 04:12:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:12:18,671 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-10-27 04:12:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:18,672 INFO L225 Difference]: With dead ends: 163 [2020-10-27 04:12:18,672 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 04:12:18,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:12:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 04:12:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-27 04:12:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:12:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-27 04:12:18,682 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 186 [2020-10-27 04:12:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-27 04:12:18,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:12:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-27 04:12:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 04:12:18,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:18,686 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 04:12:18,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:12:18,687 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1394047471, now seen corresponding path program 20 times [2020-10-27 04:12:18,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:18,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527907611] [2020-10-27 04:12:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:18,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:12:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:19,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:19,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:19,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:12:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:19,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:19,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527907611] [2020-10-27 04:12:19,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:12:19,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:12:19,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143461567] [2020-10-27 04:12:19,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:12:19,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:12:19,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:12:19,953 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 4 states. [2020-10-27 04:12:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:20,014 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-27 04:12:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:12:20,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-27 04:12:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:20,019 INFO L225 Difference]: With dead ends: 161 [2020-10-27 04:12:20,019 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 04:12:20,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:12:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 04:12:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-27 04:12:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 04:12:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-27 04:12:20,026 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 194 [2020-10-27 04:12:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:20,028 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-27 04:12:20,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:12:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-27 04:12:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 04:12:20,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:20,030 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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, 1, 1] [2020-10-27 04:12:20,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:12:20,031 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:20,031 INFO L82 PathProgramCache]: Analyzing trace with hash 210307983, now seen corresponding path program 1 times [2020-10-27 04:12:20,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:20,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220708174] [2020-10-27 04:12:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:12:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:22,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:12:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 04:12:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:22,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:12:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4136 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:22,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220708174] [2020-10-27 04:12:22,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:22,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 04:12:22,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900031535] [2020-10-27 04:12:22,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:12:22,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:12:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:12:22,442 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-10-27 04:12:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:22,525 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2020-10-27 04:12:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:12:22,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 04:12:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:22,527 INFO L225 Difference]: With dead ends: 163 [2020-10-27 04:12:22,527 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 04:12:22,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:12:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 04:12:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-27 04:12:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 04:12:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-27 04:12:22,536 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 196 [2020-10-27 04:12:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:22,536 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-27 04:12:22,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:12:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-27 04:12:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 04:12:22,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:22,538 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:22,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:12:22,539 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:22,539 INFO L82 PathProgramCache]: Analyzing trace with hash 102640013, now seen corresponding path program 2 times [2020-10-27 04:12:22,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:22,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112298597] [2020-10-27 04:12:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:25,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 04:12:25,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:12:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:25,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:25,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:25,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:25,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:25,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:25,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:25,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:12:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:12:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4139 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:25,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112298597] [2020-10-27 04:12:25,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:25,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 04:12:25,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582397701] [2020-10-27 04:12:25,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:12:25,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:12:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:12:25,320 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 6 states. [2020-10-27 04:12:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:25,408 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2020-10-27 04:12:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:12:25,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-10-27 04:12:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:25,411 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:12:25,411 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 04:12:25,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:12:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 04:12:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-27 04:12:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 04:12:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-27 04:12:25,417 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 198 [2020-10-27 04:12:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:25,417 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-27 04:12:25,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:12:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-27 04:12:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 04:12:25,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:25,419 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:25,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:12:25,419 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash -287064053, now seen corresponding path program 3 times [2020-10-27 04:12:25,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:25,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117448506] [2020-10-27 04:12:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:12:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:28,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:12:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:12:28,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 04:12:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:28,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:28,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:28,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:28,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117448506] [2020-10-27 04:12:28,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:28,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:12:28,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110290020] [2020-10-27 04:12:28,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:12:28,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:28,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:12:28,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:12:28,248 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 7 states. [2020-10-27 04:12:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:28,352 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-10-27 04:12:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:12:28,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-27 04:12:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:28,354 INFO L225 Difference]: With dead ends: 167 [2020-10-27 04:12:28,354 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 04:12:28,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:12:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 04:12:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-27 04:12:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-27 04:12:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-27 04:12:28,362 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 200 [2020-10-27 04:12:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:28,363 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-27 04:12:28,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:12:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-27 04:12:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 04:12:28,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:28,365 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:28,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:12:28,365 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:28,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1130516727, now seen corresponding path program 4 times [2020-10-27 04:12:28,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:28,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806271639] [2020-10-27 04:12:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:12:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 04:12:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:33,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:33,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:33,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:33,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806271639] [2020-10-27 04:12:33,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:33,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:12:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377999898] [2020-10-27 04:12:33,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:12:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:12:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:12:33,777 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 8 states. [2020-10-27 04:12:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:33,883 INFO L93 Difference]: Finished difference Result 169 states and 174 transitions. [2020-10-27 04:12:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:12:33,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-27 04:12:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:33,884 INFO L225 Difference]: With dead ends: 169 [2020-10-27 04:12:33,884 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:12:33,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:12:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:12:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-27 04:12:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 04:12:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-27 04:12:33,893 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 202 [2020-10-27 04:12:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:33,893 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-27 04:12:33,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:12:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-27 04:12:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 04:12:33,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:33,896 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:33,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:12:33,896 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash 60282503, now seen corresponding path program 5 times [2020-10-27 04:12:33,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:33,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896018098] [2020-10-27 04:12:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5603 [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:12:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:12:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:12:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 04:12:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:39,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896018098] [2020-10-27 04:12:39,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:39,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:12:39,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360363913] [2020-10-27 04:12:39,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:12:39,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:12:39,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:12:39,694 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 9 states. [2020-10-27 04:12:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:39,820 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2020-10-27 04:12:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:12:39,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2020-10-27 04:12:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:39,822 INFO L225 Difference]: With dead ends: 171 [2020-10-27 04:12:39,822 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 04:12:39,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:12:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 04:12:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-27 04:12:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 04:12:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-27 04:12:39,835 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 204 [2020-10-27 04:12:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:39,836 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-27 04:12:39,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:12:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-27 04:12:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 04:12:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:39,839 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:39,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:12:39,839 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1957041797, now seen corresponding path program 6 times [2020-10-27 04:12:39,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:39,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814524336] [2020-10-27 04:12:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:12:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:45,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:45,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:12:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:45,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814524336] [2020-10-27 04:12:45,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:45,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:12:45,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400613369] [2020-10-27 04:12:45,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:12:45,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:12:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:12:45,189 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand 10 states. [2020-10-27 04:12:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:45,320 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2020-10-27 04:12:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:12:45,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-10-27 04:12:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:45,322 INFO L225 Difference]: With dead ends: 173 [2020-10-27 04:12:45,322 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 04:12:45,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:12:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 04:12:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-27 04:12:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 04:12:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2020-10-27 04:12:45,330 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 206 [2020-10-27 04:12:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:45,330 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2020-10-27 04:12:45,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:12:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2020-10-27 04:12:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 04:12:45,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:45,332 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:45,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 04:12:45,332 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -618377469, now seen corresponding path program 7 times [2020-10-27 04:12:45,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:45,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186427193] [2020-10-27 04:12:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5359 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:12:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 04:12:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:50,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186427193] [2020-10-27 04:12:50,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:50,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:12:50,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595122797] [2020-10-27 04:12:50,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:12:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:50,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:12:50,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:12:50,916 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand 11 states. [2020-10-27 04:12:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:51,023 INFO L93 Difference]: Finished difference Result 175 states and 180 transitions. [2020-10-27 04:12:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:12:51,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 208 [2020-10-27 04:12:51,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:51,026 INFO L225 Difference]: With dead ends: 175 [2020-10-27 04:12:51,026 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 04:12:51,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:12:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 04:12:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-27 04:12:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 04:12:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2020-10-27 04:12:51,035 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 208 [2020-10-27 04:12:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:51,035 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2020-10-27 04:12:51,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:12:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2020-10-27 04:12:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:12:51,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:51,037 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:51,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 04:12:51,037 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:51,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1695129599, now seen corresponding path program 8 times [2020-10-27 04:12:51,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:51,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461061219] [2020-10-27 04:12:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:12:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7017 [2020-10-27 04:12:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:12:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:12:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:12:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:12:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 04:12:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:12:58,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461061219] [2020-10-27 04:12:58,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:58,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:12:58,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8643724] [2020-10-27 04:12:58,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:12:58,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:12:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:12:58,291 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 12 states. [2020-10-27 04:12:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:58,427 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2020-10-27 04:12:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:12:58,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 210 [2020-10-27 04:12:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:58,430 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:12:58,430 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:12:58,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:12:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:12:58,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-27 04:12:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 04:12:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2020-10-27 04:12:58,439 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 210 [2020-10-27 04:12:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:58,440 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2020-10-27 04:12:58,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:12:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2020-10-27 04:12:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 04:12:58,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:58,441 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:12:58,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 04:12:58,442 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:58,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1366808193, now seen corresponding path program 9 times [2020-10-27 04:12:58,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:58,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30591074] [2020-10-27 04:12:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 04:13:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 04:13:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:13:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:13:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:13:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:03,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:03,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:03,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:13:03,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:03,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4216 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:03,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30591074] [2020-10-27 04:13:03,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:03,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:13:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016051429] [2020-10-27 04:13:03,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:13:03,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:03,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:13:03,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:13:03,893 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand 13 states. [2020-10-27 04:13:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:04,053 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2020-10-27 04:13:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:13:04,054 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 212 [2020-10-27 04:13:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:04,055 INFO L225 Difference]: With dead ends: 179 [2020-10-27 04:13:04,055 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 04:13:04,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:13:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 04:13:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-27 04:13:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 04:13:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2020-10-27 04:13:04,063 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 212 [2020-10-27 04:13:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:04,064 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2020-10-27 04:13:04,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:13:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2020-10-27 04:13:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 04:13:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:04,066 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:04,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 04:13:04,066 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 617450365, now seen corresponding path program 10 times [2020-10-27 04:13:04,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:04,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895462174] [2020-10-27 04:13:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5334 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:13:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:09,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 04:13:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:09,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895462174] [2020-10-27 04:13:09,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:09,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 04:13:09,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726170084] [2020-10-27 04:13:09,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:13:09,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:09,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:13:09,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:13:09,709 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 14 states. [2020-10-27 04:13:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:09,879 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2020-10-27 04:13:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:13:09,880 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 214 [2020-10-27 04:13:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:09,881 INFO L225 Difference]: With dead ends: 181 [2020-10-27 04:13:09,881 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:13:09,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:13:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:13:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-27 04:13:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 04:13:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2020-10-27 04:13:09,889 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 214 [2020-10-27 04:13:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:09,889 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2020-10-27 04:13:09,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:13:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2020-10-27 04:13:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 04:13:09,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:09,891 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:09,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 04:13:09,891 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:09,892 INFO L82 PathProgramCache]: Analyzing trace with hash 524445179, now seen corresponding path program 11 times [2020-10-27 04:13:09,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:09,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252323445] [2020-10-27 04:13:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:15,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:13:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:15,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:15,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:15,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:15,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:13:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 04:13:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:15,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:13:15,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:15,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252323445] [2020-10-27 04:13:15,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:15,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:13:15,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924252669] [2020-10-27 04:13:15,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:13:15,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:13:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:13:15,442 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand 15 states. [2020-10-27 04:13:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:15,563 INFO L93 Difference]: Finished difference Result 183 states and 188 transitions. [2020-10-27 04:13:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:13:15,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2020-10-27 04:13:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:15,565 INFO L225 Difference]: With dead ends: 183 [2020-10-27 04:13:15,565 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 04:13:15,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:13:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 04:13:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-27 04:13:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 04:13:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2020-10-27 04:13:15,577 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 216 [2020-10-27 04:13:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:15,578 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2020-10-27 04:13:15,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:13:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2020-10-27 04:13:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:13:15,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:15,579 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:15,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 04:13:15,580 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1340774649, now seen corresponding path program 12 times [2020-10-27 04:13:15,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:15,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502107864] [2020-10-27 04:13:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5562 [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:13:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:13:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:21,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:13:21,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:13:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:13:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:21,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502107864] [2020-10-27 04:13:21,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:21,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:13:21,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339737936] [2020-10-27 04:13:21,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:13:21,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:21,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:13:21,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:13:21,525 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand 16 states. [2020-10-27 04:13:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:21,691 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2020-10-27 04:13:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:13:21,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 218 [2020-10-27 04:13:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:21,693 INFO L225 Difference]: With dead ends: 185 [2020-10-27 04:13:21,693 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 04:13:21,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:13:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 04:13:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-27 04:13:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 04:13:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2020-10-27 04:13:21,701 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 218 [2020-10-27 04:13:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:21,702 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2020-10-27 04:13:21,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:13:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2020-10-27 04:13:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 04:13:21,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:21,703 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:21,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 04:13:21,704 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:21,704 INFO L82 PathProgramCache]: Analyzing trace with hash -145619849, now seen corresponding path program 13 times [2020-10-27 04:13:21,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:21,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719175881] [2020-10-27 04:13:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:13:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 04:13:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:13:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4304 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:27,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719175881] [2020-10-27 04:13:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:13:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181266347] [2020-10-27 04:13:27,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:13:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:13:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:13:27,140 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand 17 states. [2020-10-27 04:13:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:27,277 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-10-27 04:13:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:13:27,278 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 220 [2020-10-27 04:13:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:27,279 INFO L225 Difference]: With dead ends: 187 [2020-10-27 04:13:27,279 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 04:13:27,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:13:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 04:13:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-27 04:13:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 04:13:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2020-10-27 04:13:27,288 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 220 [2020-10-27 04:13:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:27,288 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2020-10-27 04:13:27,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:13:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2020-10-27 04:13:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 04:13:27,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:27,289 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:27,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 04:13:27,290 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1653377141, now seen corresponding path program 14 times [2020-10-27 04:13:27,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:27,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791504751] [2020-10-27 04:13:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5377 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 04:13:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:13:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4331 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:33,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791504751] [2020-10-27 04:13:33,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:33,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:13:33,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580542526] [2020-10-27 04:13:33,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:13:33,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:33,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:13:33,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:13:33,011 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 18 states. [2020-10-27 04:13:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:33,216 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2020-10-27 04:13:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:13:33,216 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 222 [2020-10-27 04:13:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:33,218 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:13:33,218 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 04:13:33,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:13:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 04:13:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-27 04:13:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-27 04:13:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2020-10-27 04:13:33,226 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 222 [2020-10-27 04:13:33,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:33,226 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2020-10-27 04:13:33,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:13:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2020-10-27 04:13:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 04:13:33,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:33,228 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:33,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 04:13:33,228 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash -382335757, now seen corresponding path program 15 times [2020-10-27 04:13:33,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:33,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194756041] [2020-10-27 04:13:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:13:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:13:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:38,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:13:38,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 04:13:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:38,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4360 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:38,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194756041] [2020-10-27 04:13:38,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:38,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:13:38,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408385058] [2020-10-27 04:13:38,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:13:38,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:13:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:13:38,588 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 19 states. [2020-10-27 04:13:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:38,714 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2020-10-27 04:13:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:13:38,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 224 [2020-10-27 04:13:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:38,716 INFO L225 Difference]: With dead ends: 191 [2020-10-27 04:13:38,716 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 04:13:38,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:13:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 04:13:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-27 04:13:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 04:13:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2020-10-27 04:13:38,727 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 224 [2020-10-27 04:13:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:38,727 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2020-10-27 04:13:38,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:13:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2020-10-27 04:13:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 04:13:38,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:38,729 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:38,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 04:13:38,729 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1802656241, now seen corresponding path program 16 times [2020-10-27 04:13:38,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:38,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852937024] [2020-10-27 04:13:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5327 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:13:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:13:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4391 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:44,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852937024] [2020-10-27 04:13:44,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:44,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 04:13:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823463141] [2020-10-27 04:13:44,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 04:13:44,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:44,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 04:13:44,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:13:44,454 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand 20 states. [2020-10-27 04:13:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:44,643 INFO L93 Difference]: Finished difference Result 193 states and 198 transitions. [2020-10-27 04:13:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:13:44,643 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 226 [2020-10-27 04:13:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:44,645 INFO L225 Difference]: With dead ends: 193 [2020-10-27 04:13:44,645 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:13:44,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:13:44,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:13:44,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-27 04:13:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 04:13:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2020-10-27 04:13:44,653 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 226 [2020-10-27 04:13:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:44,653 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2020-10-27 04:13:44,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 04:13:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2020-10-27 04:13:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 04:13:44,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:44,655 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:44,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 04:13:44,655 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1340958575, now seen corresponding path program 17 times [2020-10-27 04:13:44,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:44,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538584672] [2020-10-27 04:13:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5293 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 04:13:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:13:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:13:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:13:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:50,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:13:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 4135 trivial. 0 not checked. [2020-10-27 04:13:50,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538584672] [2020-10-27 04:13:50,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:50,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:13:50,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223073177] [2020-10-27 04:13:50,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:13:50,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:50,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:13:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:13:50,356 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand 21 states. [2020-10-27 04:13:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:50,601 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2020-10-27 04:13:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:13:50,602 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 228 [2020-10-27 04:13:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:50,603 INFO L225 Difference]: With dead ends: 195 [2020-10-27 04:13:50,603 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 04:13:50,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:13:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 04:13:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-27 04:13:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 04:13:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2020-10-27 04:13:50,612 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 228 [2020-10-27 04:13:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:50,612 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2020-10-27 04:13:50,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:13:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2020-10-27 04:13:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 04:13:50,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:50,614 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 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 04:13:50,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 04:13:50,615 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 31133037, now seen corresponding path program 18 times [2020-10-27 04:13:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:50,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184471874] [2020-10-27 04:13:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking...