/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:52:18,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:52:18,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:52:18,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:52:18,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:52:18,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:52:18,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:52:18,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:52:18,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:52:18,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:52:18,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:52:18,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:52:18,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:52:18,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:52:18,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:52:18,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:52:18,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:52:18,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:52:18,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:52:19,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:52:19,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:52:19,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:52:19,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:52:19,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:52:19,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:52:19,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:52:19,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:52:19,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:52:19,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:52:19,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:52:19,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:52:19,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:52:19,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:52:19,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:52:19,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:52:19,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:52:19,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:52:19,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:52:19,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:52:19,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:52:19,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:52:19,045 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 07:52:19,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:52:19,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:52:19,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:52:19,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:52:19,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:52:19,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:52:19,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:52:19,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:52:19,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:52:19,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:52:19,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:52:19,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:52:19,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:52:19,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:52:19,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:52:19,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:52:19,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:52:19,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:52:19,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:52:19,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:52:19,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:52:19,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:52:19,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:52:19,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:52:19,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:52:19,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:52:19,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:52:19,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:52:19,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:52:19,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:52:19,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:52:19,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:52:19,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:52:19,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:52:19,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:52:19,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-29 07:52:19,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9d5ed99/2ebc9dbf32d545b686c3f11e8b84f8fa/FLAGec89152b7 [2020-10-29 07:52:20,513 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:52:20,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-29 07:52:20,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9d5ed99/2ebc9dbf32d545b686c3f11e8b84f8fa/FLAGec89152b7 [2020-10-29 07:52:20,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9d5ed99/2ebc9dbf32d545b686c3f11e8b84f8fa [2020-10-29 07:52:20,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:52:20,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:52:20,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:52:20,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:52:20,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:52:20,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:52:20" (1/1) ... [2020-10-29 07:52:20,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685e4fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:20, skipping insertion in model container [2020-10-29 07:52:20,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:52:20" (1/1) ... [2020-10-29 07:52:20,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:52:20,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:52:21,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:52:21,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:52:21,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:52:21,972 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:52:21,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21 WrapperNode [2020-10-29 07:52:21,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:52:21,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:52:21,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:52:21,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:52:21,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:21,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (1/1) ... [2020-10-29 07:52:22,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:52:22,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:52:22,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:52:22,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:52:22,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (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 07:52:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:52:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:52:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:52:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:52:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:52:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:52:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:52:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:52:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:52:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:52:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:52:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:52:25,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:52:25,456 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:52:25,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:52:25 BoogieIcfgContainer [2020-10-29 07:52:25,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:52:25,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:52:25,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:52:25,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:52:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:52:20" (1/3) ... [2020-10-29 07:52:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0569bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:52:25, skipping insertion in model container [2020-10-29 07:52:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:52:21" (2/3) ... [2020-10-29 07:52:25,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0569bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:52:25, skipping insertion in model container [2020-10-29 07:52:25,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:52:25" (3/3) ... [2020-10-29 07:52:25,470 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label51.c [2020-10-29 07:52:25,483 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:52:25,490 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:52:25,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:52:25,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:52:25,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:52:25,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:52:25,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:52:25,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:52:25,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:52:25,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:52:25,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:52:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:52:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 07:52:25,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:25,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:25,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2124106695, now seen corresponding path program 1 times [2020-10-29 07:52:25,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:25,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421108502] [2020-10-29 07:52:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:26,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:26,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 07:52:26,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-29 07:52:26,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:26,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 07:52:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:52:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:26,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:26,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:26,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:26,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:52:26,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:26,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:52:26,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421108502] [2020-10-29 07:52:26,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:26,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:52:26,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997808073] [2020-10-29 07:52:26,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:52:26,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:26,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:52:26,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:52:26,631 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:52:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:35,929 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-29 07:52:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:52:35,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 07:52:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:35,956 INFO L225 Difference]: With dead ends: 1250 [2020-10-29 07:52:35,956 INFO L226 Difference]: Without dead ends: 730 [2020-10-29 07:52:35,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:52:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-29 07:52:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-29 07:52:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:52:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-29 07:52:36,088 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 23 [2020-10-29 07:52:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:36,089 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-29 07:52:36,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:52:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-29 07:52:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 07:52:36,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:36,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:36,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:52:36,095 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash -328255535, now seen corresponding path program 1 times [2020-10-29 07:52:36,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120540876] [2020-10-29 07:52:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:52:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-29 07:52:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:37,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:52:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:37,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:37,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:37,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:52:37,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:37,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:52:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:52:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:52:38,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:38,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:52:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:52:38,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120540876] [2020-10-29 07:52:38,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:38,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:52:38,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997616590] [2020-10-29 07:52:38,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:38,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:38,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:38,229 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-29 07:52:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:51,405 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-29 07:52:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:52:51,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-29 07:52:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:51,417 INFO L225 Difference]: With dead ends: 1776 [2020-10-29 07:52:51,417 INFO L226 Difference]: Without dead ends: 1069 [2020-10-29 07:52:51,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:52:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-29 07:52:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-29 07:52:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-29 07:52:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-29 07:52:51,505 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 92 [2020-10-29 07:52:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:51,505 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-29 07:52:51,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-29 07:52:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 07:52:51,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:51,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:51,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:52:51,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:51,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:51,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1574759087, now seen corresponding path program 1 times [2020-10-29 07:52:51,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:51,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146301133] [2020-10-29 07:52:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:52:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:52:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-29 07:52:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:52:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:52:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:52,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:52:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:52:52,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146301133] [2020-10-29 07:52:52,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:52:52,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:52:52,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841806514] [2020-10-29 07:52:52,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:52,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:52,849 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-29 07:53:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:00,876 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-29 07:53:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:53:00,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-29 07:53:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:00,895 INFO L225 Difference]: With dead ends: 2759 [2020-10-29 07:53:00,895 INFO L226 Difference]: Without dead ends: 1723 [2020-10-29 07:53:00,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:53:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-29 07:53:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-29 07:53:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-29 07:53:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-29 07:53:00,991 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 93 [2020-10-29 07:53:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:00,991 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-29 07:53:00,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-29 07:53:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 07:53:01,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:01,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:01,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:53:01,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:01,005 INFO L82 PathProgramCache]: Analyzing trace with hash -908781065, now seen corresponding path program 1 times [2020-10-29 07:53:01,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:01,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645220026] [2020-10-29 07:53:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:53:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:53:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:53:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:53:02,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:53:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:53:02,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645220026] [2020-10-29 07:53:02,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:53:02,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:53:02,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030755771] [2020-10-29 07:53:02,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:02,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:02,389 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-29 07:53:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:11,219 INFO L93 Difference]: Finished difference Result 4296 states and 6215 transitions. [2020-10-29 07:53:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:53:11,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-29 07:53:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:11,243 INFO L225 Difference]: With dead ends: 4296 [2020-10-29 07:53:11,243 INFO L226 Difference]: Without dead ends: 2951 [2020-10-29 07:53:11,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:53:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-29 07:53:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2293. [2020-10-29 07:53:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-10-29 07:53:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3046 transitions. [2020-10-29 07:53:11,331 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3046 transitions. Word has length 97 [2020-10-29 07:53:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:11,331 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 3046 transitions. [2020-10-29 07:53:11,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3046 transitions. [2020-10-29 07:53:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 07:53:11,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:11,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:11,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:53:11,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:11,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1652928805, now seen corresponding path program 1 times [2020-10-29 07:53:11,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:11,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201805890] [2020-10-29 07:53:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:12,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 07:53:12,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-29 07:53:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:13,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:53:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:13,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:13,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:53:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:53:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:53:14,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201805890] [2020-10-29 07:53:14,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:14,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:53:14,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939166573] [2020-10-29 07:53:14,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:53:14,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:53:14,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:53:14,904 INFO L87 Difference]: Start difference. First operand 2293 states and 3046 transitions. Second operand 6 states. [2020-10-29 07:53:25,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:25,019 INFO L93 Difference]: Finished difference Result 3268 states and 4186 transitions. [2020-10-29 07:53:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 07:53:25,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2020-10-29 07:53:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:25,039 INFO L225 Difference]: With dead ends: 3268 [2020-10-29 07:53:25,040 INFO L226 Difference]: Without dead ends: 3265 [2020-10-29 07:53:25,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2020-10-29 07:53:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 3226. [2020-10-29 07:53:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3226 states. [2020-10-29 07:53:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4122 transitions. [2020-10-29 07:53:25,163 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4122 transitions. Word has length 297 [2020-10-29 07:53:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:25,165 INFO L481 AbstractCegarLoop]: Abstraction has 3226 states and 4122 transitions. [2020-10-29 07:53:25,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:53:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4122 transitions. [2020-10-29 07:53:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-29 07:53:25,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:25,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:25,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:53:25,179 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1635157987, now seen corresponding path program 1 times [2020-10-29 07:53:25,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:25,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953885590] [2020-10-29 07:53:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:30,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-29 07:53:30,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:53:30,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:30,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:53:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:53:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:30,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:30,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:30,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:53:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-29 07:53:30,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:30,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:53:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:53:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:31,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:53:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:53:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-29 07:53:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:31,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:31,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:53:31,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:53:31,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:31,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:53:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 45 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:53:32,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953885590] [2020-10-29 07:53:32,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:32,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:32,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547848290] [2020-10-29 07:53:32,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:32,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:32,018 INFO L87 Difference]: Start difference. First operand 3226 states and 4122 transitions. Second operand 7 states. [2020-10-29 07:53:32,172 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:53:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:43,836 INFO L93 Difference]: Finished difference Result 6203 states and 8024 transitions. [2020-10-29 07:53:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:53:43,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-29 07:53:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:43,853 INFO L225 Difference]: With dead ends: 6203 [2020-10-29 07:53:43,854 INFO L226 Difference]: Without dead ends: 3290 [2020-10-29 07:53:43,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:53:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2020-10-29 07:53:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3228. [2020-10-29 07:53:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3228 states. [2020-10-29 07:53:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 4122 transitions. [2020-10-29 07:53:43,949 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 4122 transitions. Word has length 389 [2020-10-29 07:53:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:43,950 INFO L481 AbstractCegarLoop]: Abstraction has 3228 states and 4122 transitions. [2020-10-29 07:53:43,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 4122 transitions. [2020-10-29 07:53:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 07:53:43,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:43,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:43,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:53:43,959 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:43,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:43,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1373526023, now seen corresponding path program 1 times [2020-10-29 07:53:43,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:43,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357636706] [2020-10-29 07:53:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-29 07:53:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:53:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:53:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:49,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:53:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 07:53:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:49,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:49,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:53:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:49,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:53:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:53:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:53:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:53:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:53:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:53:50,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357636706] [2020-10-29 07:53:50,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:50,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:50,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785492518] [2020-10-29 07:53:50,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:50,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:50,764 INFO L87 Difference]: Start difference. First operand 3228 states and 4122 transitions. Second operand 7 states. [2020-10-29 07:54:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:06,161 INFO L93 Difference]: Finished difference Result 7159 states and 9567 transitions. [2020-10-29 07:54:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:06,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-29 07:54:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:06,187 INFO L225 Difference]: With dead ends: 7159 [2020-10-29 07:54:06,187 INFO L226 Difference]: Without dead ends: 4552 [2020-10-29 07:54:06,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2020-10-29 07:54:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4517. [2020-10-29 07:54:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4517 states. [2020-10-29 07:54:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5536 transitions. [2020-10-29 07:54:06,322 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5536 transitions. Word has length 392 [2020-10-29 07:54:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:06,323 INFO L481 AbstractCegarLoop]: Abstraction has 4517 states and 5536 transitions. [2020-10-29 07:54:06,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:06,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5536 transitions. [2020-10-29 07:54:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 07:54:06,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:06,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:06,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:54:06,332 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash -381555226, now seen corresponding path program 1 times [2020-10-29 07:54:06,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:06,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455060812] [2020-10-29 07:54:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:54:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2936 [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:54:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:09,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:09,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:54:09,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:54:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:54:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:10,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:10,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:10,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:54:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:54:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455060812] [2020-10-29 07:54:10,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:10,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:10,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297505749] [2020-10-29 07:54:10,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:10,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:10,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:10,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:10,666 INFO L87 Difference]: Start difference. First operand 4517 states and 5536 transitions. Second operand 7 states. [2020-10-29 07:54:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:25,583 INFO L93 Difference]: Finished difference Result 10704 states and 13390 transitions. [2020-10-29 07:54:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:54:25,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-29 07:54:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:25,614 INFO L225 Difference]: With dead ends: 10704 [2020-10-29 07:54:25,615 INFO L226 Difference]: Without dead ends: 6500 [2020-10-29 07:54:25,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:54:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2020-10-29 07:54:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6123. [2020-10-29 07:54:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6123 states. [2020-10-29 07:54:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7362 transitions. [2020-10-29 07:54:25,793 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7362 transitions. Word has length 408 [2020-10-29 07:54:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:25,794 INFO L481 AbstractCegarLoop]: Abstraction has 6123 states and 7362 transitions. [2020-10-29 07:54:25,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7362 transitions. [2020-10-29 07:54:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-29 07:54:25,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:25,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:25,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:54:25,810 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash 938173315, now seen corresponding path program 1 times [2020-10-29 07:54:25,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:25,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073230405] [2020-10-29 07:54:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-29 07:54:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:54:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 07:54:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:30,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:54:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:54:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:54:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:54:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-29 07:54:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:31,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:54:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:54:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:31,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 07:54:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 131 proven. 84 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:54:32,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073230405] [2020-10-29 07:54:32,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:32,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:32,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780283263] [2020-10-29 07:54:32,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:32,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:32,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:32,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:32,031 INFO L87 Difference]: Start difference. First operand 6123 states and 7362 transitions. Second operand 7 states. [2020-10-29 07:54:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:42,611 INFO L93 Difference]: Finished difference Result 14239 states and 17761 transitions. [2020-10-29 07:54:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:42,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 484 [2020-10-29 07:54:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:42,659 INFO L225 Difference]: With dead ends: 14239 [2020-10-29 07:54:42,659 INFO L226 Difference]: Without dead ends: 8429 [2020-10-29 07:54:42,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:42,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8429 states. [2020-10-29 07:54:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 8052. [2020-10-29 07:54:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8052 states. [2020-10-29 07:54:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 9509 transitions. [2020-10-29 07:54:42,963 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 9509 transitions. Word has length 484 [2020-10-29 07:54:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:42,965 INFO L481 AbstractCegarLoop]: Abstraction has 8052 states and 9509 transitions. [2020-10-29 07:54:42,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 9509 transitions. [2020-10-29 07:54:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-29 07:54:42,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:42,974 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:42,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:54:42,975 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2074295137, now seen corresponding path program 1 times [2020-10-29 07:54:42,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:42,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181027571] [2020-10-29 07:54:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1578 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:54:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:45,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:54:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:54:45,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:54:45,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:54:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:54:45,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181027571] [2020-10-29 07:54:45,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:45,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:45,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996971468] [2020-10-29 07:54:45,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:45,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:45,723 INFO L87 Difference]: Start difference. First operand 8052 states and 9509 transitions. Second operand 7 states. [2020-10-29 07:55:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:02,542 INFO L93 Difference]: Finished difference Result 14971 states and 18940 transitions. [2020-10-29 07:55:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:02,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-29 07:55:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:02,577 INFO L225 Difference]: With dead ends: 14971 [2020-10-29 07:55:02,577 INFO L226 Difference]: Without dead ends: 10029 [2020-10-29 07:55:02,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10029 states. [2020-10-29 07:55:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10029 to 9978. [2020-10-29 07:55:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9978 states. [2020-10-29 07:55:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9978 states to 9978 states and 12051 transitions. [2020-10-29 07:55:02,846 INFO L78 Accepts]: Start accepts. Automaton has 9978 states and 12051 transitions. Word has length 521 [2020-10-29 07:55:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:02,847 INFO L481 AbstractCegarLoop]: Abstraction has 9978 states and 12051 transitions. [2020-10-29 07:55:02,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9978 states and 12051 transitions. [2020-10-29 07:55:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-29 07:55:02,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:02,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:02,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:55:02,859 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1847011269, now seen corresponding path program 1 times [2020-10-29 07:55:02,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:02,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186916606] [2020-10-29 07:55:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:55:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:04,900 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:55:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:05,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:55:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 07:55:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:05,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186916606] [2020-10-29 07:55:05,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:05,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:55:05,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668621024] [2020-10-29 07:55:05,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:55:05,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:05,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:55:05,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:55:05,795 INFO L87 Difference]: Start difference. First operand 9978 states and 12051 transitions. Second operand 8 states. [2020-10-29 07:55:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:26,034 INFO L93 Difference]: Finished difference Result 24385 states and 31504 transitions. [2020-10-29 07:55:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:55:26,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 526 [2020-10-29 07:55:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:26,086 INFO L225 Difference]: With dead ends: 24385 [2020-10-29 07:55:26,087 INFO L226 Difference]: Without dead ends: 14720 [2020-10-29 07:55:26,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:55:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14720 states. [2020-10-29 07:55:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14720 to 14708. [2020-10-29 07:55:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14708 states. [2020-10-29 07:55:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14708 states to 14708 states and 18955 transitions. [2020-10-29 07:55:26,551 INFO L78 Accepts]: Start accepts. Automaton has 14708 states and 18955 transitions. Word has length 526 [2020-10-29 07:55:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:26,551 INFO L481 AbstractCegarLoop]: Abstraction has 14708 states and 18955 transitions. [2020-10-29 07:55:26,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:55:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 14708 states and 18955 transitions. [2020-10-29 07:55:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-29 07:55:26,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:26,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:26,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:55:26,562 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash 752839309, now seen corresponding path program 1 times [2020-10-29 07:55:26,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:26,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502725305] [2020-10-29 07:55:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:55:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:28,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:28,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:28,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:55:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:29,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502725305] [2020-10-29 07:55:29,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:29,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:29,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638819888] [2020-10-29 07:55:29,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:29,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:29,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:29,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:29,171 INFO L87 Difference]: Start difference. First operand 14708 states and 18955 transitions. Second operand 7 states. [2020-10-29 07:55:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:44,237 INFO L93 Difference]: Finished difference Result 30027 states and 41289 transitions. [2020-10-29 07:55:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:55:44,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-29 07:55:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:44,317 INFO L225 Difference]: With dead ends: 30027 [2020-10-29 07:55:44,317 INFO L226 Difference]: Without dead ends: 19661 [2020-10-29 07:55:44,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19661 states. [2020-10-29 07:55:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19661 to 19039. [2020-10-29 07:55:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19039 states. [2020-10-29 07:55:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19039 states to 19039 states and 25155 transitions. [2020-10-29 07:55:44,849 INFO L78 Accepts]: Start accepts. Automaton has 19039 states and 25155 transitions. Word has length 548 [2020-10-29 07:55:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:44,850 INFO L481 AbstractCegarLoop]: Abstraction has 19039 states and 25155 transitions. [2020-10-29 07:55:44,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 19039 states and 25155 transitions. [2020-10-29 07:55:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-29 07:55:44,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:44,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:44,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:55:44,864 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash -601098738, now seen corresponding path program 1 times [2020-10-29 07:55:44,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:44,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516109527] [2020-10-29 07:55:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 618 [2020-10-29 07:55:48,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3102 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-29 07:55:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:48,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:48,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:48,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:48,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:55:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:49,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516109527] [2020-10-29 07:55:49,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:49,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:49,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365254000] [2020-10-29 07:55:49,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:49,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:49,347 INFO L87 Difference]: Start difference. First operand 19039 states and 25155 transitions. Second operand 7 states. [2020-10-29 07:55:55,132 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:56:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:01,853 INFO L93 Difference]: Finished difference Result 37805 states and 50096 transitions. [2020-10-29 07:56:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:56:01,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 602 [2020-10-29 07:56:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:01,926 INFO L225 Difference]: With dead ends: 37805 [2020-10-29 07:56:01,926 INFO L226 Difference]: Without dead ends: 19079 [2020-10-29 07:56:01,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19079 states. [2020-10-29 07:56:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19079 to 18759. [2020-10-29 07:56:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18759 states. [2020-10-29 07:56:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18759 states to 18759 states and 24091 transitions. [2020-10-29 07:56:02,483 INFO L78 Accepts]: Start accepts. Automaton has 18759 states and 24091 transitions. Word has length 602 [2020-10-29 07:56:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:02,484 INFO L481 AbstractCegarLoop]: Abstraction has 18759 states and 24091 transitions. [2020-10-29 07:56:02,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 18759 states and 24091 transitions. [2020-10-29 07:56:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-10-29 07:56:02,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:02,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:02,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:56:02,506 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1847180320, now seen corresponding path program 1 times [2020-10-29 07:56:02,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:02,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304004187] [2020-10-29 07:56:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking...