/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:17:39,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:17:39,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:17:39,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:17:39,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:17:39,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:17:39,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:17:39,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:17:39,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:17:39,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:17:39,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:17:39,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:17:39,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:17:39,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:17:39,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:17:39,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:17:39,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:17:39,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:17:39,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:17:39,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:17:39,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:17:39,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:17:39,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:17:39,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:17:39,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:17:39,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:17:39,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:17:39,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:17:39,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:17:39,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:17:39,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:17:39,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:17:39,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:17:39,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:17:39,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:17:39,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:17:39,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:17:39,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:17:39,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:17:39,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:17:39,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:17:39,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:17:40,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:17:40,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:17:40,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:17:40,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:17:40,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:17:40,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:17:40,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:17:40,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:17:40,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:17:40,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:17:40,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:17:40,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:17:40,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:17:40,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:17:40,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:17:40,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:17:40,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:17:40,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:17:40,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:17:40,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:17:40,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:17:40,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:17:40,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:17:40,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:17:40,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:17:40,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:17:40,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:17:40,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:17:40,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:17:40,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:17:40,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:17:40,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:17:40,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:17:40,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:17:40,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:17:40,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-29 12:17:40,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234fbdbd/0143a4f1f8c346349e924cc39abe9690/FLAGeb28b9ee0 [2020-10-29 12:17:41,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:17:41,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-29 12:17:41,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234fbdbd/0143a4f1f8c346349e924cc39abe9690/FLAGeb28b9ee0 [2020-10-29 12:17:41,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234fbdbd/0143a4f1f8c346349e924cc39abe9690 [2020-10-29 12:17:41,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:17:41,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:17:41,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:17:41,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:17:41,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:17:41,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:41,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cac7861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41, skipping insertion in model container [2020-10-29 12:17:41,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:41,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:17:41,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:17:41,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:17:41,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:17:41,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:17:41,951 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:17:41,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41 WrapperNode [2020-10-29 12:17:41,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:17:41,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:17:41,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:17:41,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:17:41,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:41,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:41,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:41,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:42,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:42,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:42,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... [2020-10-29 12:17:42,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:17:42,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:17:42,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:17:42,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:17:42,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:17:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:17:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:17:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:17:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-29 12:17:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:17:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:17:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-29 12:17:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:17:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:17:42,491 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:17:42,491 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:17:42,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:17:42 BoogieIcfgContainer [2020-10-29 12:17:42,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:17:42,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:17:42,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:17:42,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:17:42,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:17:41" (1/3) ... [2020-10-29 12:17:42,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334601bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:17:42, skipping insertion in model container [2020-10-29 12:17:42,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:17:41" (2/3) ... [2020-10-29 12:17:42,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334601bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:17:42, skipping insertion in model container [2020-10-29 12:17:42,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:17:42" (3/3) ... [2020-10-29 12:17:42,505 INFO L111 eAbstractionObserver]: Analyzing ICFG sum60-2.i [2020-10-29 12:17:42,520 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:17:42,526 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:17:42,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:17:42,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:17:42,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:17:42,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:17:42,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:17:42,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:17:42,578 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:17:42,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:17:42,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:17:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 12:17:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:17:42,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:42,615 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] [2020-10-29 12:17:42,615 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:42,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 12:17:42,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:42,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173529715] [2020-10-29 12:17:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:17:44,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:17:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-29 12:17:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:17:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:17:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:44,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:17:44,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:17:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:17:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:17:45,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 12:17:45,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:17:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:17:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:17:45,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:45,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:17:45,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:17:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:17:45,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173529715] [2020-10-29 12:17:45,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:17:45,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:17:45,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453363667] [2020-10-29 12:17:45,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:45,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:45,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:45,237 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 12:17:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:45,787 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 12:17:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:17:45,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:17:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:45,800 INFO L225 Difference]: With dead ends: 87 [2020-10-29 12:17:45,800 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:17:45,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:17:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:17:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 12:17:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:17:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 12:17:45,863 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 12:17:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:45,864 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 12:17:45,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 12:17:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 12:17:45,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:45,867 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, 1, 1] [2020-10-29 12:17:45,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:17:45,868 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 12:17:45,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:45,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612181830] [2020-10-29 12:17:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:17:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-10-29 12:17:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:47,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:17:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:17:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:47,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:47,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:17:47,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:47,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:47,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:17:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:17:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:17:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:17:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:17:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:47,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:17:47,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:47,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:47,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:17:47,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:17:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:47,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:17:47,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:17:47,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612181830] [2020-10-29 12:17:47,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:47,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:17:47,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534200245] [2020-10-29 12:17:47,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:17:47,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:17:47,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:47,458 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 12:17:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:47,613 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 12:17:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:17:47,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 12:17:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:47,615 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:17:47,615 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:17:47,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:17:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 12:17:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 12:17:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 12:17:47,625 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 12:17:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:47,625 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 12:17:47,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:17:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 12:17:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:17:47,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:47,627 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:47,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:17:47,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:47,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 12:17:47,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:47,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688294484] [2020-10-29 12:17:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:17:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:17:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:52,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:17:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:52,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:17:52,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:17:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:17:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:17:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:52,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:17:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 12:17:52,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688294484] [2020-10-29 12:17:52,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:52,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:17:52,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165436906] [2020-10-29 12:17:52,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:17:52,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:52,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:17:52,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:52,853 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 12:17:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:53,034 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 12:17:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:17:53,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 12:17:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:53,035 INFO L225 Difference]: With dead ends: 56 [2020-10-29 12:17:53,036 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 12:17:53,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:53,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 12:17:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 12:17:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:17:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 12:17:53,044 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 12:17:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:53,045 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 12:17:53,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:17:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 12:17:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:17:53,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:53,047 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:53,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:17:53,047 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 12:17:53,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:53,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006313910] [2020-10-29 12:17:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:17:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:17:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:17:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:58,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:17:58,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:17:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:17:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:17:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:17:58,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006313910] [2020-10-29 12:17:58,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:58,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:17:58,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236614075] [2020-10-29 12:17:58,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:17:58,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:58,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:17:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:58,383 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 12:17:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:58,664 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 12:17:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:17:58,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 12:17:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:58,665 INFO L225 Difference]: With dead ends: 60 [2020-10-29 12:17:58,666 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 12:17:58,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 12:17:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 12:17:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:17:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 12:17:58,682 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 12:17:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:58,683 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 12:17:58,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:17:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 12:17:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:17:58,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:58,694 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:58,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:17:58,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:58,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 12:17:58,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:58,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237056458] [2020-10-29 12:17:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:18:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:18:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:18:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:03,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:03,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:18:03,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:18:03,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:18:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:18:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:18:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:18:04,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 12:18:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:18:04,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237056458] [2020-10-29 12:18:04,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:04,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:18:04,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787280872] [2020-10-29 12:18:04,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:18:04,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:04,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:18:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:18:04,051 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 12:18:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:04,320 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 12:18:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:18:04,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 12:18:04,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:04,321 INFO L225 Difference]: With dead ends: 64 [2020-10-29 12:18:04,321 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:18:04,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:18:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:18:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 12:18:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:18:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 12:18:04,334 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 12:18:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:04,334 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 12:18:04,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:18:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 12:18:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:18:04,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:04,339 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:04,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:18:04,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 12:18:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:04,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015998288] [2020-10-29 12:18:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:18:09,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:18:09,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:18:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:18:09,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 12:18:09,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:18:09,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:09,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:18:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:18:09,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 12:18:09,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:18:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 12:18:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:18:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:18:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:18:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 12:18:09,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015998288] [2020-10-29 12:18:09,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:09,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:18:09,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667817684] [2020-10-29 12:18:09,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:09,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:09,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:09,722 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 12:18:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:10,059 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 12:18:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:18:10,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 12:18:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:10,060 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:18:10,061 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 12:18:10,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:18:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 12:18:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 12:18:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:18:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 12:18:10,068 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 12:18:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:10,069 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 12:18:10,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:18:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 12:18:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:18:10,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:10,070 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:10,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:18:10,071 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 12:18:10,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:10,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149470110] [2020-10-29 12:18:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:18:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:18:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:18:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:18:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:15,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:15,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:18:15,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:15,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:18:15,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:18:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:18:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:18:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:18:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 12:18:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:18:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:18:15,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149470110] [2020-10-29 12:18:15,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:15,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:18:15,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588444262] [2020-10-29 12:18:15,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:18:15,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:15,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:18:15,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:18:15,502 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 12:18:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:15,858 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 12:18:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:18:15,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 12:18:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:15,862 INFO L225 Difference]: With dead ends: 72 [2020-10-29 12:18:15,862 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 12:18:15,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 12:18:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 12:18:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:18:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 12:18:15,878 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 12:18:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:15,878 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 12:18:15,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:18:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 12:18:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:18:15,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:15,880 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:15,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:18:15,884 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:15,884 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 12:18:15,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:15,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858433078] [2020-10-29 12:18:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:18:20,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:18:20,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:20,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:20,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:20,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:20,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:21,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:18:21,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:21,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:18:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:18:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:18:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 12:18:21,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858433078] [2020-10-29 12:18:21,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:21,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:18:21,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031815948] [2020-10-29 12:18:21,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:18:21,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:21,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:18:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:18:21,329 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 12:18:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:21,741 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 12:18:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:18:21,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 12:18:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:21,743 INFO L225 Difference]: With dead ends: 76 [2020-10-29 12:18:21,743 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:18:21,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:18:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 12:18:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 12:18:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 12:18:21,752 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 12:18:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:21,752 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 12:18:21,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:18:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 12:18:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:18:21,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:21,753 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:21,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:18:21,754 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 12:18:21,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:21,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871467610] [2020-10-29 12:18:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:26,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:18:26,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:18:26,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:26,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 12:18:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:26,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:26,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:26,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:18:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:18:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:18:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:18:27,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871467610] [2020-10-29 12:18:27,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:27,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:18:27,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126221762] [2020-10-29 12:18:27,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:18:27,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:27,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:18:27,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:18:27,228 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 12:18:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:27,704 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 12:18:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:18:27,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 12:18:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:27,706 INFO L225 Difference]: With dead ends: 80 [2020-10-29 12:18:27,706 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 12:18:27,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:18:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 12:18:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 12:18:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:18:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 12:18:27,713 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 12:18:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:27,714 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 12:18:27,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:18:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 12:18:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:18:27,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:27,715 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:27,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:18:27,716 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 12:18:27,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:27,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594429140] [2020-10-29 12:18:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:18:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:18:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:18:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:18:33,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 12:18:33,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:33,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:18:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:18:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:18:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:33,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:18:33,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:18:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:33,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:18:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:18:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:18:33,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594429140] [2020-10-29 12:18:33,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:33,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:18:33,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928797460] [2020-10-29 12:18:33,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:18:33,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:18:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:18:33,134 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 12:18:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:33,649 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 12:18:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:18:33,650 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 12:18:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:33,651 INFO L225 Difference]: With dead ends: 84 [2020-10-29 12:18:33,651 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 12:18:33,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:18:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 12:18:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 12:18:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:18:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 12:18:33,660 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 12:18:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:33,661 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 12:18:33,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:18:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 12:18:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:18:33,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:33,662 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:33,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:18:33,662 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 12:18:33,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:33,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348083366] [2020-10-29 12:18:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:38,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:18:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:38,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:39,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:18:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 12:18:39,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348083366] [2020-10-29 12:18:39,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:39,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:18:39,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725446771] [2020-10-29 12:18:39,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:18:39,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:39,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:18:39,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:18:39,107 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 12:18:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:39,685 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 12:18:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:18:39,685 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 12:18:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:39,686 INFO L225 Difference]: With dead ends: 88 [2020-10-29 12:18:39,687 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:18:39,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:18:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:18:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 12:18:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 12:18:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 12:18:39,701 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 12:18:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:39,701 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 12:18:39,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:18:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 12:18:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:18:39,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:39,703 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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] [2020-10-29 12:18:39,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:18:39,703 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-29 12:18:39,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:39,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198304422] [2020-10-29 12:18:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:18:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:44,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:18:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:18:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:18:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:18:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:18:45,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 12:18:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:18:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:18:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 12:18:45,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198304422] [2020-10-29 12:18:45,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:45,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:18:45,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695844674] [2020-10-29 12:18:45,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:18:45,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:18:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:18:45,292 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 12:18:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:46,034 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 12:18:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:18:46,035 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 12:18:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:46,036 INFO L225 Difference]: With dead ends: 92 [2020-10-29 12:18:46,036 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 12:18:46,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:18:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 12:18:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 12:18:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 12:18:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 12:18:46,057 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 12:18:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:46,058 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 12:18:46,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:18:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 12:18:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:18:46,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:46,063 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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] [2020-10-29 12:18:46,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:18:46,063 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:46,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash 384990905, now seen corresponding path program 12 times [2020-10-29 12:18:46,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:46,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178855313] [2020-10-29 12:18:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 12:18:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:18:51,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:18:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 12:18:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:18:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:18:51,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178855313] [2020-10-29 12:18:51,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:51,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:18:51,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065946664] [2020-10-29 12:18:51,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:18:51,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:18:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:18:51,997 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 12:18:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:52,629 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 12:18:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:18:52,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 12:18:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:52,631 INFO L225 Difference]: With dead ends: 96 [2020-10-29 12:18:52,631 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 12:18:52,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:18:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 12:18:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 12:18:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 12:18:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 12:18:52,650 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 12:18:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:52,650 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 12:18:52,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:18:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 12:18:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 12:18:52,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:52,652 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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] [2020-10-29 12:18:52,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:18:52,655 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:52,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2075018135, now seen corresponding path program 13 times [2020-10-29 12:18:52,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:52,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884022586] [2020-10-29 12:18:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 12:18:57,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:57,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 12:18:57,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:18:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:58,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:18:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:58,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 12:18:58,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884022586] [2020-10-29 12:18:58,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:58,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:18:58,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075898667] [2020-10-29 12:18:58,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:18:58,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:18:58,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:58,454 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 12:18:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:59,163 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 12:18:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:18:59,163 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 12:18:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:59,164 INFO L225 Difference]: With dead ends: 100 [2020-10-29 12:18:59,164 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:18:59,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:18:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:18:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 12:18:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 12:18:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 12:18:59,176 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 12:18:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:59,178 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 12:18:59,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:18:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 12:18:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 12:18:59,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:59,180 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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] [2020-10-29 12:18:59,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:18:59,180 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash 487500277, now seen corresponding path program 14 times [2020-10-29 12:18:59,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:59,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081734064] [2020-10-29 12:18:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:19:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 12:19:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:19:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:19:04,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:19:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:19:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:19:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:19:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:19:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 12:19:05,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081734064] [2020-10-29 12:19:05,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:05,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:19:05,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560182374] [2020-10-29 12:19:05,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:19:05,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:19:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:19:05,004 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 12:19:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:05,758 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 12:19:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:19:05,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 12:19:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:05,760 INFO L225 Difference]: With dead ends: 104 [2020-10-29 12:19:05,760 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 12:19:05,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:19:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 12:19:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 12:19:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 12:19:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 12:19:05,769 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 12:19:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:05,770 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 12:19:05,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:19:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 12:19:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 12:19:05,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:05,771 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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] [2020-10-29 12:19:05,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:19:05,772 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1139535405, now seen corresponding path program 15 times [2020-10-29 12:19:05,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:05,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246603691] [2020-10-29 12:19:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:19:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:19:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:10,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:10,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:19:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:19:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:11,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:19:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:19:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:19:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:11,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:19:11,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 12:19:11,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:11,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:19:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:19:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 12:19:11,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246603691] [2020-10-29 12:19:11,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:11,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:19:11,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895828473] [2020-10-29 12:19:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:19:11,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:19:11,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:19:11,637 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 12:19:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:12,501 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 12:19:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:12,503 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 12:19:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:12,503 INFO L225 Difference]: With dead ends: 108 [2020-10-29 12:19:12,504 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 12:19:12,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:19:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 12:19:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 12:19:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 12:19:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 12:19:12,521 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 12:19:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:12,521 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 12:19:12,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:19:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 12:19:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 12:19:12,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:12,524 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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] [2020-10-29 12:19:12,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:19:12,525 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash -497624271, now seen corresponding path program 16 times [2020-10-29 12:19:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:12,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774219721] [2020-10-29 12:19:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:19:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:19:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:17,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:19:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:19:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:19:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:19:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:19:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:19:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 12:19:18,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774219721] [2020-10-29 12:19:18,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:18,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:19:18,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070016166] [2020-10-29 12:19:18,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:19:18,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:18,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:19:18,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:18,446 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 12:19:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:19,368 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 12:19:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:19:19,369 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 12:19:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:19,370 INFO L225 Difference]: With dead ends: 112 [2020-10-29 12:19:19,370 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 12:19:19,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:19:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 12:19:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 12:19:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 12:19:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 12:19:19,379 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 12:19:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:19,380 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 12:19:19,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:19:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 12:19:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 12:19:19,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:19,381 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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] [2020-10-29 12:19:19,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:19:19,382 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -670603761, now seen corresponding path program 17 times [2020-10-29 12:19:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:19,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217713148] [2020-10-29 12:19:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:19:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:19:24,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:19:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:19:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:19:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:19:25,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:19:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 12:19:25,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217713148] [2020-10-29 12:19:25,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:25,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:19:25,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147108120] [2020-10-29 12:19:25,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:19:25,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:19:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:19:25,365 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 12:19:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:26,385 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 12:19:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:19:26,386 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 12:19:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:26,387 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:19:26,387 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 12:19:26,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:19:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 12:19:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 12:19:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 12:19:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 12:19:26,402 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 12:19:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:26,402 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 12:19:26,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:19:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 12:19:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 12:19:26,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:26,405 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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] [2020-10-29 12:19:26,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:19:26,406 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash 435032685, now seen corresponding path program 18 times [2020-10-29 12:19:26,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:26,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124064358] [2020-10-29 12:19:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:19:31,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 12:19:31,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:19:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 12:19:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:19:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:31,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:19:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:19:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:19:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:19:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:19:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:19:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 12:19:32,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124064358] [2020-10-29 12:19:32,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:32,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:19:32,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559908567] [2020-10-29 12:19:32,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:19:32,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:32,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:19:32,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:19:32,448 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 12:19:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:33,492 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 12:19:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:19:33,493 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 12:19:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:33,494 INFO L225 Difference]: With dead ends: 120 [2020-10-29 12:19:33,494 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 12:19:33,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:19:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 12:19:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 12:19:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 12:19:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 12:19:33,502 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 12:19:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:33,502 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 12:19:33,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:19:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 12:19:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:19:33,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:33,504 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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] [2020-10-29 12:19:33,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:19:33,505 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1332428875, now seen corresponding path program 19 times [2020-10-29 12:19:33,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:33,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54852836] [2020-10-29 12:19:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 12:19:38,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:19:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:38,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:19:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:19:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:19:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-29 12:19:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:39,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:19:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:19:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 12:19:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:40,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:19:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 12:19:40,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54852836] [2020-10-29 12:19:40,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:40,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:19:40,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614032501] [2020-10-29 12:19:40,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:19:40,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:40,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:19:40,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:40,071 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 12:19:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:41,175 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 12:19:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:19:41,176 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 12:19:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:41,177 INFO L225 Difference]: With dead ends: 124 [2020-10-29 12:19:41,178 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 12:19:41,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:19:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 12:19:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 12:19:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 12:19:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 12:19:41,186 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 12:19:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:41,186 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 12:19:41,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:19:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 12:19:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 12:19:41,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:41,188 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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] [2020-10-29 12:19:41,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:19:41,189 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:41,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:41,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1065922647, now seen corresponding path program 20 times [2020-10-29 12:19:41,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:41,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83252448] [2020-10-29 12:19:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:19:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:19:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:46,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:46,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:46,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 12:19:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:46,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:19:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:19:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 12:19:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:19:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 12:19:47,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83252448] [2020-10-29 12:19:47,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:47,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 12:19:47,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680788024] [2020-10-29 12:19:47,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 12:19:47,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:47,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 12:19:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:19:47,583 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 24 states. [2020-10-29 12:19:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:48,843 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 12:19:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:19:48,845 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 154 [2020-10-29 12:19:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:48,846 INFO L225 Difference]: With dead ends: 128 [2020-10-29 12:19:48,846 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 12:19:48,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:19:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 12:19:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 12:19:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 12:19:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 12:19:48,861 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 154 [2020-10-29 12:19:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:48,861 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 12:19:48,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 12:19:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 12:19:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:19:48,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:48,866 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 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] [2020-10-29 12:19:48,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:19:48,866 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1268949127, now seen corresponding path program 21 times [2020-10-29 12:19:48,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:48,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311498689] [2020-10-29 12:19:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:19:53,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:53,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:19:53,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:53,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:53,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:19:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:19:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:19:54,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:19:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 12:19:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:55,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:55,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:19:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:19:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 12:19:55,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311498689] [2020-10-29 12:19:55,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:55,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:19:55,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456266164] [2020-10-29 12:19:55,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:19:55,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:19:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:19:55,221 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 25 states. [2020-10-29 12:19:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:56,508 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 12:19:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:19:56,513 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 12:19:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:56,514 INFO L225 Difference]: With dead ends: 132 [2020-10-29 12:19:56,514 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 12:19:56,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 12:19:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 12:19:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 12:19:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 12:19:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 12:19:56,522 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 160 [2020-10-29 12:19:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:56,522 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 12:19:56,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:19:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 12:19:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 12:19:56,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:56,524 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 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] [2020-10-29 12:19:56,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:19:56,524 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash -602565915, now seen corresponding path program 22 times [2020-10-29 12:19:56,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:56,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316528396] [2020-10-29 12:19:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:01,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:20:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:20:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:20:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:20:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:02,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:20:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:20:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 12:20:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:20:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:20:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 12:20:03,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316528396] [2020-10-29 12:20:03,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:03,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 12:20:03,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220682817] [2020-10-29 12:20:03,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 12:20:03,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 12:20:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:20:03,059 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 26 states. [2020-10-29 12:20:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:04,458 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 12:20:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:20:04,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2020-10-29 12:20:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:04,460 INFO L225 Difference]: With dead ends: 136 [2020-10-29 12:20:04,461 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 12:20:04,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 12:20:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 12:20:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 12:20:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 12:20:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 12:20:04,469 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 166 [2020-10-29 12:20:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:04,469 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 12:20:04,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 12:20:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 12:20:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 12:20:04,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:04,471 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 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] [2020-10-29 12:20:04,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:20:04,471 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1603307203, now seen corresponding path program 23 times [2020-10-29 12:20:04,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:04,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344872525] [2020-10-29 12:20:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:20:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:09,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:09,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:09,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:20:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:10,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:20:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:20:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 12:20:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:20:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:20:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 12:20:11,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344872525] [2020-10-29 12:20:11,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:11,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 12:20:11,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907523084] [2020-10-29 12:20:11,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 12:20:11,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:11,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 12:20:11,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:20:11,228 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 27 states. [2020-10-29 12:20:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:12,735 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 12:20:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 12:20:12,735 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-10-29 12:20:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:12,737 INFO L225 Difference]: With dead ends: 140 [2020-10-29 12:20:12,737 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 12:20:12,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 12:20:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 12:20:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 12:20:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 12:20:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 12:20:12,747 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 172 [2020-10-29 12:20:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:12,747 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 12:20:12,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 12:20:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 12:20:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 12:20:12,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:12,749 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 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] [2020-10-29 12:20:12,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:20:12,750 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:12,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1013701665, now seen corresponding path program 24 times [2020-10-29 12:20:12,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:12,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809902975] [2020-10-29 12:20:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 12:20:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:20:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:20:18,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:20:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:20:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 12:20:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:19,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:20:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 12:20:19,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809902975] [2020-10-29 12:20:19,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:19,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 12:20:19,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771372550] [2020-10-29 12:20:19,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 12:20:19,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:19,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 12:20:19,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:20:19,391 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 28 states. [2020-10-29 12:20:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:20,806 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 12:20:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:20:20,806 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-29 12:20:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:20,808 INFO L225 Difference]: With dead ends: 144 [2020-10-29 12:20:20,808 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 12:20:20,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:20:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 12:20:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 12:20:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 12:20:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 12:20:20,818 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 178 [2020-10-29 12:20:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:20,818 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 12:20:20,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 12:20:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 12:20:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 12:20:20,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:20,820 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 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] [2020-10-29 12:20:20,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:20:20,820 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:20,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1201140479, now seen corresponding path program 25 times [2020-10-29 12:20:20,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:20,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902692729] [2020-10-29 12:20:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:20:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 12:20:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 12:20:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:25,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:25,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:25,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:25,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:26,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 12:20:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:20:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:20:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 12:20:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 12:20:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 12:20:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 12:20:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902692729] [2020-10-29 12:20:27,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:27,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:20:27,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121410396] [2020-10-29 12:20:27,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:20:27,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:27,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:20:27,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:20:27,471 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 29 states. [2020-10-29 12:20:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:29,068 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 12:20:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:20:29,069 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2020-10-29 12:20:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:29,070 INFO L225 Difference]: With dead ends: 148 [2020-10-29 12:20:29,070 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:20:29,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 12:20:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:20:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 12:20:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 12:20:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 12:20:29,079 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 184 [2020-10-29 12:20:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:29,080 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 12:20:29,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:20:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 12:20:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 12:20:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:29,081 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 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] [2020-10-29 12:20:29,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:20:29,081 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash 983378781, now seen corresponding path program 26 times [2020-10-29 12:20:29,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:29,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555501771] [2020-10-29 12:20:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:34,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:34,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 12:20:34,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 12:20:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:20:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:34,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:34,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:20:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:20:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:35,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:20:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:20:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:20:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 12:20:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:35,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:20:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 12:20:35,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555501771] [2020-10-29 12:20:35,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:35,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 12:20:35,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024379232] [2020-10-29 12:20:35,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 12:20:35,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:35,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 12:20:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:20:35,903 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 30 states. [2020-10-29 12:20:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:37,551 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 12:20:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 12:20:37,552 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 190 [2020-10-29 12:20:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:37,553 INFO L225 Difference]: With dead ends: 152 [2020-10-29 12:20:37,553 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 12:20:37,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 12:20:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 12:20:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 12:20:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 12:20:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 12:20:37,564 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 190 [2020-10-29 12:20:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:37,565 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 12:20:37,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 12:20:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 12:20:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 12:20:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:37,567 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 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] [2020-10-29 12:20:37,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:20:37,567 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1449401029, now seen corresponding path program 27 times [2020-10-29 12:20:37,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:37,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34073478] [2020-10-29 12:20:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 12:20:42,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:42,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 12:20:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:20:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:20:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:20:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 12:20:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 12:20:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:20:44,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 12:20:44,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34073478] [2020-10-29 12:20:44,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:44,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 12:20:44,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503321438] [2020-10-29 12:20:44,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 12:20:44,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 12:20:44,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:20:44,456 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 31 states. [2020-10-29 12:20:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:46,183 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 12:20:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 12:20:46,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2020-10-29 12:20:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:46,185 INFO L225 Difference]: With dead ends: 156 [2020-10-29 12:20:46,185 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 12:20:46,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 12:20:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 12:20:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 12:20:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 12:20:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 12:20:46,194 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 196 [2020-10-29 12:20:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:46,194 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 12:20:46,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 12:20:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 12:20:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 12:20:46,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:46,195 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 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] [2020-10-29 12:20:46,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:20:46,195 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2035056793, now seen corresponding path program 28 times [2020-10-29 12:20:46,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:46,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199065098] [2020-10-29 12:20:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:20:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 12:20:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:20:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:20:51,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-29 12:20:51,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:20:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 12:20:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:53,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:53,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:20:53,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 12:20:53,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199065098] [2020-10-29 12:20:53,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:53,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 12:20:53,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844060465] [2020-10-29 12:20:53,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 12:20:53,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:53,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 12:20:53,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:20:53,082 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 32 states. [2020-10-29 12:20:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:54,762 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-29 12:20:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 12:20:54,763 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-10-29 12:20:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:54,764 INFO L225 Difference]: With dead ends: 160 [2020-10-29 12:20:54,764 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 12:20:54,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 12:20:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 12:20:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 12:20:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 12:20:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 12:20:54,776 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 202 [2020-10-29 12:20:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:54,777 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 12:20:54,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 12:20:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 12:20:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 12:20:54,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:54,778 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 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] [2020-10-29 12:20:54,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:20:54,778 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash -721461897, now seen corresponding path program 29 times [2020-10-29 12:20:54,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:54,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556759153] [2020-10-29 12:20:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 12:20:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:20:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:20:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:00,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:21:00,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:21:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:21:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:00,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:21:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:21:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 12:21:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 12:21:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:21:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 12:21:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556759153] [2020-10-29 12:21:01,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:21:01,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 12:21:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805027781] [2020-10-29 12:21:01,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 12:21:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 12:21:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:21:01,768 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 33 states. [2020-10-29 12:21:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:03,571 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 12:21:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 12:21:03,571 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 208 [2020-10-29 12:21:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:03,572 INFO L225 Difference]: With dead ends: 164 [2020-10-29 12:21:03,573 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 12:21:03,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 12:21:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 12:21:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 12:21:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 12:21:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-29 12:21:03,580 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 208 [2020-10-29 12:21:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:03,580 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-29 12:21:03,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 12:21:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-29 12:21:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 12:21:03,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:03,582 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 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] [2020-10-29 12:21:03,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:21:03,582 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1533223979, now seen corresponding path program 30 times [2020-10-29 12:21:03,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:03,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124853179] [2020-10-29 12:21:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:08,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 12:21:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 12:21:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:21:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:21:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:21:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:21:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:09,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:21:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:21:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 12:21:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:10,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 12:21:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:21:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 12:21:10,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124853179] [2020-10-29 12:21:10,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:21:10,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 12:21:10,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028238119] [2020-10-29 12:21:10,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 12:21:10,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 12:21:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 12:21:10,794 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 34 states. [2020-10-29 12:21:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:12,749 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-29 12:21:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 12:21:12,750 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2020-10-29 12:21:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:12,751 INFO L225 Difference]: With dead ends: 168 [2020-10-29 12:21:12,751 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 12:21:12,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 12:21:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 12:21:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 12:21:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 12:21:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 12:21:12,758 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 214 [2020-10-29 12:21:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:12,758 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 12:21:12,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 12:21:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 12:21:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 12:21:12,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:12,760 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 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] [2020-10-29 12:21:12,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:21:12,760 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2103092301, now seen corresponding path program 31 times [2020-10-29 12:21:12,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:12,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902175530] [2020-10-29 12:21:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 12:21:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:21:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:21:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:21:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:18,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 12:21:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:21:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:21:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:21:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 12:21:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:21:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-29 12:21:20,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902175530] [2020-10-29 12:21:20,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:21:20,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 12:21:20,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859842196] [2020-10-29 12:21:20,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 12:21:20,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 12:21:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:21:20,025 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 35 states. [2020-10-29 12:21:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:22,063 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-29 12:21:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 12:21:22,064 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 220 [2020-10-29 12:21:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:22,065 INFO L225 Difference]: With dead ends: 172 [2020-10-29 12:21:22,066 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 12:21:22,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 12:21:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 12:21:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 12:21:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 12:21:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-29 12:21:22,074 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 220 [2020-10-29 12:21:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:22,074 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-29 12:21:22,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 12:21:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-29 12:21:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 12:21:22,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:22,076 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 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] [2020-10-29 12:21:22,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:21:22,076 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:22,077 INFO L82 PathProgramCache]: Analyzing trace with hash 842087697, now seen corresponding path program 32 times [2020-10-29 12:21:22,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:22,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703407471] [2020-10-29 12:21:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking...