/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem16_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:28:36,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:28:36,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:28:36,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:28:36,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:28:36,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:28:36,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:28:36,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:28:36,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:28:36,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:28:36,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:28:36,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:28:36,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:28:36,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:28:36,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:28:36,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:28:36,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:28:36,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:28:36,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:28:36,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:28:36,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:28:36,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:28:36,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:28:36,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:28:36,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:28:36,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:28:36,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:28:36,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:28:36,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:28:36,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:28:36,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:28:36,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:28:36,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:28:36,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:28:36,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:28:36,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:28:36,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:28:36,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:28:36,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:28:36,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:28:36,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:28:36,140 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 [2020-10-28 13:28:36,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:28:36,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:28:36,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:28:36,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:28:36,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:28:36,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:28:36,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:28:36,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:28:36,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:28:36,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:28:36,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:28:36,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:28:36,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:28:36,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:28:36,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:28:36,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:28:36,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:28:36,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:28:36,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:28:36,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:28:36,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:28:36,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:28:36,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:28:36,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:28:36,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:28:36,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:28:36,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:28:36,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:28:36,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:28:36,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:28:36,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:28:36,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:28:36,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:28:36,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:28:36,740 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:28:36,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53.c [2020-10-28 13:28:36,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5b6d79b/8e973fcf08324c5ebf0d64411f66d5b6/FLAGf9d1283d1 [2020-10-28 13:28:37,771 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:28:37,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label53.c [2020-10-28 13:28:37,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5b6d79b/8e973fcf08324c5ebf0d64411f66d5b6/FLAGf9d1283d1 [2020-10-28 13:28:37,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5b6d79b/8e973fcf08324c5ebf0d64411f66d5b6 [2020-10-28 13:28:37,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:28:37,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:28:37,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:28:37,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:28:37,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:28:37,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:28:37" (1/1) ... [2020-10-28 13:28:37,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:37, skipping insertion in model container [2020-10-28 13:28:37,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:28:37" (1/1) ... [2020-10-28 13:28:37,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:28:37,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:28:38,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:28:38,806 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:28:39,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:28:39,240 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:28:39,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39 WrapperNode [2020-10-28 13:28:39,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:28:39,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:28:39,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:28:39,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:28:39,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (1/1) ... [2020-10-28 13:28:39,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:28:39,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:28:39,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:28:39,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:28:39,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (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 [2020-10-28 13:28:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:28:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:28:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:28:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:28:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:28:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:28:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:28:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:28:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:28:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:28:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:28:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:28:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:28:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:28:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:28:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:28:42,243 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:28:42,244 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:28:42,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:28:42 BoogieIcfgContainer [2020-10-28 13:28:42,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:28:42,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:28:42,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:28:42,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:28:42,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:28:37" (1/3) ... [2020-10-28 13:28:42,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325db6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:28:42, skipping insertion in model container [2020-10-28 13:28:42,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:28:39" (2/3) ... [2020-10-28 13:28:42,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325db6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:28:42, skipping insertion in model container [2020-10-28 13:28:42,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:28:42" (3/3) ... [2020-10-28 13:28:42,257 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label53.c [2020-10-28 13:28:42,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:28:42,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:28:42,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:28:42,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:28:42,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:28:42,327 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:28:42,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:28:42,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:28:42,328 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:28:42,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:28:42,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:28:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:28:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 13:28:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:42,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:42,368 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1636606660, now seen corresponding path program 1 times [2020-10-28 13:28:42,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:42,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779925461] [2020-10-28 13:28:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:43,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 13:28:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-28 13:28:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:43,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:28:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:28:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:28:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:43,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:28:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:43,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:28:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:28:43,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779925461] [2020-10-28 13:28:43,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:28:43,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:28:43,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279045146] [2020-10-28 13:28:43,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:28:43,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:28:43,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:28:43,462 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:28:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:50,776 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-28 13:28:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:28:50,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 13:28:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:50,837 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:28:50,839 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:28:50,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:28:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-28 13:28:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-28 13:28:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1667 transitions. [2020-10-28 13:28:50,994 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1667 transitions. Word has length 44 [2020-10-28 13:28:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:50,996 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1667 transitions. [2020-10-28 13:28:50,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:28:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1667 transitions. [2020-10-28 13:28:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 13:28:51,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:51,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:51,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:28:51,013 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1074708054, now seen corresponding path program 1 times [2020-10-28 13:28:51,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:51,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494400010] [2020-10-28 13:28:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 13:28:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:28:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:28:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 13:28:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:28:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:28:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:56,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:28:56,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:28:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:28:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:28:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 13:28:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:28:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:28:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:28:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:28:56,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494400010] [2020-10-28 13:28:56,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:56,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:56,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114819716] [2020-10-28 13:28:56,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:56,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:56,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:56,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:56,917 INFO L87 Difference]: Start difference. First operand 1032 states and 1667 transitions. Second operand 7 states. [2020-10-28 13:29:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:02,556 INFO L93 Difference]: Finished difference Result 2771 states and 4601 transitions. [2020-10-28 13:29:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:02,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-28 13:29:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:02,579 INFO L225 Difference]: With dead ends: 2771 [2020-10-28 13:29:02,580 INFO L226 Difference]: Without dead ends: 1745 [2020-10-28 13:29:02,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:02,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-28 13:29:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1728. [2020-10-28 13:29:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-28 13:29:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2623 transitions. [2020-10-28 13:29:02,702 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2623 transitions. Word has length 211 [2020-10-28 13:29:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:02,707 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2623 transitions. [2020-10-28 13:29:02,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2623 transitions. [2020-10-28 13:29:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 13:29:02,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:02,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:02,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:29:02,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1743397978, now seen corresponding path program 1 times [2020-10-28 13:29:02,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:02,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806846867] [2020-10-28 13:29:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4460 [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:29:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:07,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:29:07,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:29:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:29:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 13:29:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:29:07,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:29:07,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:29:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:29:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 72 proven. 87 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:29:07,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806846867] [2020-10-28 13:29:07,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:07,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:07,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200499150] [2020-10-28 13:29:07,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:07,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:07,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:07,907 INFO L87 Difference]: Start difference. First operand 1728 states and 2623 transitions. Second operand 7 states. [2020-10-28 13:29:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:12,953 INFO L93 Difference]: Finished difference Result 3866 states and 5929 transitions. [2020-10-28 13:29:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:29:12,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 13:29:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:12,975 INFO L225 Difference]: With dead ends: 3866 [2020-10-28 13:29:12,976 INFO L226 Difference]: Without dead ends: 2144 [2020-10-28 13:29:12,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-28 13:29:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1733. [2020-10-28 13:29:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-28 13:29:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2565 transitions. [2020-10-28 13:29:13,079 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2565 transitions. Word has length 251 [2020-10-28 13:29:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:13,081 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2565 transitions. [2020-10-28 13:29:13,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2565 transitions. [2020-10-28 13:29:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 13:29:13,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:13,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:29:13,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:29:13,090 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1776602278, now seen corresponding path program 1 times [2020-10-28 13:29:13,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:13,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630668316] [2020-10-28 13:29:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-28 13:29:18,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:29:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:29:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:18,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:29:18,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:29:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:29:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:29:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 13:29:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:29:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 13:29:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:29:18,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:29:18,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:29:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 185 proven. 91 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 13:29:18,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630668316] [2020-10-28 13:29:18,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:18,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:18,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289773586] [2020-10-28 13:29:18,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:18,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:18,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:18,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:18,882 INFO L87 Difference]: Start difference. First operand 1733 states and 2565 transitions. Second operand 7 states. [2020-10-28 13:29:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:24,828 INFO L93 Difference]: Finished difference Result 4179 states and 6265 transitions. [2020-10-28 13:29:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:29:24,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-28 13:29:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:24,843 INFO L225 Difference]: With dead ends: 4179 [2020-10-28 13:29:24,843 INFO L226 Difference]: Without dead ends: 2095 [2020-10-28 13:29:24,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:24,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-10-28 13:29:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2078. [2020-10-28 13:29:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-28 13:29:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2393 transitions. [2020-10-28 13:29:24,917 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2393 transitions. Word has length 327 [2020-10-28 13:29:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:24,917 INFO L481 AbstractCegarLoop]: Abstraction has 2078 states and 2393 transitions. [2020-10-28 13:29:24,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2393 transitions. [2020-10-28 13:29:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-28 13:29:24,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:24,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 13:29:24,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:29:24,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:24,932 INFO L82 PathProgramCache]: Analyzing trace with hash -437200452, now seen corresponding path program 1 times [2020-10-28 13:29:24,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:24,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48826553] [2020-10-28 13:29:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-28 13:29:30,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:29:30,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:29:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:30,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:29:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 13:29:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:29:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:30,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-28 13:29:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:29:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:29:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:29:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:29:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-28 13:29:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:30,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:29:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 144 proven. 302 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-28 13:29:31,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48826553] [2020-10-28 13:29:31,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:31,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:31,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727948988] [2020-10-28 13:29:31,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:31,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:31,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:31,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:31,343 INFO L87 Difference]: Start difference. First operand 2078 states and 2393 transitions. Second operand 7 states. [2020-10-28 13:29:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:34,890 INFO L93 Difference]: Finished difference Result 4606 states and 5563 transitions. [2020-10-28 13:29:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:34,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-28 13:29:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:34,906 INFO L225 Difference]: With dead ends: 4606 [2020-10-28 13:29:34,906 INFO L226 Difference]: Without dead ends: 2534 [2020-10-28 13:29:34,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:29:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2020-10-28 13:29:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2423. [2020-10-28 13:29:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-10-28 13:29:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 2745 transitions. [2020-10-28 13:29:35,002 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 2745 transitions. Word has length 490 [2020-10-28 13:29:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:35,002 INFO L481 AbstractCegarLoop]: Abstraction has 2423 states and 2745 transitions. [2020-10-28 13:29:35,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 2745 transitions. [2020-10-28 13:29:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-28 13:29:35,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:35,028 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:35,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:29:35,028 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash -355979142, now seen corresponding path program 1 times [2020-10-28 13:29:35,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:35,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285468351] [2020-10-28 13:29:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:40,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:40,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-28 13:29:40,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:29:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:29:40,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:40,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:29:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:29:40,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:40,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:40,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:40,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:29:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:40,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:40,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:40,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:40,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:29:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:29:41,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:41,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-28 13:29:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:29:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-28 13:29:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:29:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:29:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:41,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:29:41,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:29:41,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:41,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:29:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 318 proven. 310 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2020-10-28 13:29:42,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285468351] [2020-10-28 13:29:42,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:42,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:42,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688015445] [2020-10-28 13:29:42,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:42,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:42,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:42,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:42,257 INFO L87 Difference]: Start difference. First operand 2423 states and 2745 transitions. Second operand 7 states. [2020-10-28 13:29:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:46,182 INFO L93 Difference]: Finished difference Result 6596 states and 7666 transitions. [2020-10-28 13:29:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:46,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-28 13:29:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:46,206 INFO L225 Difference]: With dead ends: 6596 [2020-10-28 13:29:46,206 INFO L226 Difference]: Without dead ends: 4516 [2020-10-28 13:29:46,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:29:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2020-10-28 13:29:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 4160. [2020-10-28 13:29:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2020-10-28 13:29:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 4617 transitions. [2020-10-28 13:29:46,324 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 4617 transitions. Word has length 729 [2020-10-28 13:29:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:46,325 INFO L481 AbstractCegarLoop]: Abstraction has 4160 states and 4617 transitions. [2020-10-28 13:29:46,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 4617 transitions. [2020-10-28 13:29:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-28 13:29:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:46,336 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:46,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:29:46,337 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash -563365014, now seen corresponding path program 1 times [2020-10-28 13:29:46,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:46,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214421497] [2020-10-28 13:29:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:51,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 757 [2020-10-28 13:29:51,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:29:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:29:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:51,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:29:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:29:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 13:29:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:29:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-28 13:29:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:29:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-28 13:29:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:29:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 318 proven. 310 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2020-10-28 13:29:52,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214421497] [2020-10-28 13:29:52,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:52,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:52,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777395817] [2020-10-28 13:29:52,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:52,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:52,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:52,821 INFO L87 Difference]: Start difference. First operand 4160 states and 4617 transitions. Second operand 7 states. [2020-10-28 13:29:54,320 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:29:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:58,377 INFO L93 Difference]: Finished difference Result 8690 states and 9684 transitions. [2020-10-28 13:29:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:29:58,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 737 [2020-10-28 13:29:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:58,400 INFO L225 Difference]: With dead ends: 8690 [2020-10-28 13:29:58,400 INFO L226 Difference]: Without dead ends: 4873 [2020-10-28 13:29:58,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:29:58,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-10-28 13:29:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4841. [2020-10-28 13:29:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4841 states. [2020-10-28 13:29:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 5334 transitions. [2020-10-28 13:29:58,530 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 5334 transitions. Word has length 737 [2020-10-28 13:29:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:58,531 INFO L481 AbstractCegarLoop]: Abstraction has 4841 states and 5334 transitions. [2020-10-28 13:29:58,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 5334 transitions. [2020-10-28 13:29:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-28 13:29:58,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:58,546 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:29:58,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:29:58,546 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -830287522, now seen corresponding path program 1 times [2020-10-28 13:29:58,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:58,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739536340] [2020-10-28 13:29:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:58,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-28 13:30:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:30:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:03,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:03,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:03,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:03,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:04,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:30:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:30:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-28 13:30:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:30:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:30:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:30:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-28 13:30:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:04,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-28 13:30:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:30:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:30:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:04,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:30:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 408 proven. 310 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2020-10-28 13:30:05,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739536340] [2020-10-28 13:30:05,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:05,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:05,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092723918] [2020-10-28 13:30:05,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:05,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:05,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:05,186 INFO L87 Difference]: Start difference. First operand 4841 states and 5334 transitions. Second operand 7 states. [2020-10-28 13:30:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:08,903 INFO L93 Difference]: Finished difference Result 10393 states and 11668 transitions. [2020-10-28 13:30:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:30:08,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 827 [2020-10-28 13:30:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:08,937 INFO L225 Difference]: With dead ends: 10393 [2020-10-28 13:30:08,937 INFO L226 Difference]: Without dead ends: 6232 [2020-10-28 13:30:08,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2020-10-28 13:30:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 5540. [2020-10-28 13:30:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5540 states. [2020-10-28 13:30:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 6006 transitions. [2020-10-28 13:30:09,086 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 6006 transitions. Word has length 827 [2020-10-28 13:30:09,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:09,088 INFO L481 AbstractCegarLoop]: Abstraction has 5540 states and 6006 transitions. [2020-10-28 13:30:09,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 6006 transitions. [2020-10-28 13:30:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-28 13:30:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:09,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:30:09,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:30:09,112 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1704802492, now seen corresponding path program 1 times [2020-10-28 13:30:09,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:09,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471130362] [2020-10-28 13:30:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:30:14,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:30:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:30:14,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:30:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:30:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:30:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-28 13:30:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:30:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:15,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:30:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-28 13:30:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:30:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 468 proven. 347 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2020-10-28 13:30:16,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471130362] [2020-10-28 13:30:16,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:16,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:16,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356403946] [2020-10-28 13:30:16,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:16,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:16,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:16,441 INFO L87 Difference]: Start difference. First operand 5540 states and 6006 transitions. Second operand 7 states. [2020-10-28 13:30:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:20,555 INFO L93 Difference]: Finished difference Result 14825 states and 16236 transitions. [2020-10-28 13:30:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:20,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1040 [2020-10-28 13:30:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:20,594 INFO L225 Difference]: With dead ends: 14825 [2020-10-28 13:30:20,594 INFO L226 Difference]: Without dead ends: 9628 [2020-10-28 13:30:20,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2020-10-28 13:30:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 7933. [2020-10-28 13:30:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2020-10-28 13:30:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 8666 transitions. [2020-10-28 13:30:20,797 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 8666 transitions. Word has length 1040 [2020-10-28 13:30:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:20,799 INFO L481 AbstractCegarLoop]: Abstraction has 7933 states and 8666 transitions. [2020-10-28 13:30:20,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 8666 transitions. [2020-10-28 13:30:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-28 13:30:20,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:20,830 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:20,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:30:20,830 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash 315809218, now seen corresponding path program 1 times [2020-10-28 13:30:20,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:20,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751340171] [2020-10-28 13:30:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1137 [2020-10-28 13:30:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 625 [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:30:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:30:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:30:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-28 13:30:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:30:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2020-10-28 13:30:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 963 [2020-10-28 13:30:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:30:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 852 proven. 183 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-28 13:30:28,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751340171] [2020-10-28 13:30:28,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:28,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157161032] [2020-10-28 13:30:28,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:28,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:28,048 INFO L87 Difference]: Start difference. First operand 7933 states and 8666 transitions. Second operand 7 states. [2020-10-28 13:30:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:33,455 INFO L93 Difference]: Finished difference Result 16207 states and 17712 transitions. [2020-10-28 13:30:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:30:33,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1115 [2020-10-28 13:30:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:33,481 INFO L225 Difference]: With dead ends: 16207 [2020-10-28 13:30:33,481 INFO L226 Difference]: Without dead ends: 8617 [2020-10-28 13:30:33,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:30:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2020-10-28 13:30:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 8270. [2020-10-28 13:30:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8270 states. [2020-10-28 13:30:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 8989 transitions. [2020-10-28 13:30:33,691 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 8989 transitions. Word has length 1115 [2020-10-28 13:30:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:33,693 INFO L481 AbstractCegarLoop]: Abstraction has 8270 states and 8989 transitions. [2020-10-28 13:30:33,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 8989 transitions. [2020-10-28 13:30:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2020-10-28 13:30:33,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:33,725 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:33,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:30:33,726 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:33,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1605548834, now seen corresponding path program 1 times [2020-10-28 13:30:33,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:33,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035255957] [2020-10-28 13:30:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1217 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 705 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:30:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:30:39,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:30:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:30:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-28 13:30:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:30:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-28 13:30:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:30:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1043 [2020-10-28 13:30:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:30:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 932 proven. 183 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2020-10-28 13:30:42,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035255957] [2020-10-28 13:30:42,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:42,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331176241] [2020-10-28 13:30:42,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:42,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:42,330 INFO L87 Difference]: Start difference. First operand 8270 states and 8989 transitions. Second operand 7 states. [2020-10-28 13:30:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:46,375 INFO L93 Difference]: Finished difference Result 16209 states and 17649 transitions. [2020-10-28 13:30:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:46,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1195 [2020-10-28 13:30:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:46,406 INFO L225 Difference]: With dead ends: 16209 [2020-10-28 13:30:46,406 INFO L226 Difference]: Without dead ends: 8282 [2020-10-28 13:30:46,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:30:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2020-10-28 13:30:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8270. [2020-10-28 13:30:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8270 states. [2020-10-28 13:30:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 8985 transitions. [2020-10-28 13:30:46,660 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 8985 transitions. Word has length 1195 [2020-10-28 13:30:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:46,662 INFO L481 AbstractCegarLoop]: Abstraction has 8270 states and 8985 transitions. [2020-10-28 13:30:46,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 8985 transitions. [2020-10-28 13:30:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2020-10-28 13:30:46,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:46,692 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:46,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:30:46,693 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:46,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1685171098, now seen corresponding path program 1 times [2020-10-28 13:30:46,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:46,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905119150] [2020-10-28 13:30:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1255 [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:30:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:30:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:52,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:52,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:30:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:30:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:30:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:30:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:30:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:30:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:30:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2020-10-28 13:30:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:30:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:30:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:30:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 790 [2020-10-28 13:30:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 900 [2020-10-28 13:30:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:30:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:30:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:30:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2509 backedges. 476 proven. 635 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2020-10-28 13:30:55,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905119150] [2020-10-28 13:30:55,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:55,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:55,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972957153] [2020-10-28 13:30:55,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:55,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:55,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:55,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:55,303 INFO L87 Difference]: Start difference. First operand 8270 states and 8985 transitions. Second operand 7 states. [2020-10-28 13:30:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:58,563 INFO L93 Difference]: Finished difference Result 16205 states and 17633 transitions. [2020-10-28 13:30:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:58,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1231 [2020-10-28 13:30:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:58,588 INFO L225 Difference]: With dead ends: 16205 [2020-10-28 13:30:58,588 INFO L226 Difference]: Without dead ends: 8278 [2020-10-28 13:30:58,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2020-10-28 13:30:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 8270. [2020-10-28 13:30:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8270 states. [2020-10-28 13:30:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 8983 transitions. [2020-10-28 13:30:58,749 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 8983 transitions. Word has length 1231 [2020-10-28 13:30:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:58,750 INFO L481 AbstractCegarLoop]: Abstraction has 8270 states and 8983 transitions. [2020-10-28 13:30:58,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 8983 transitions. [2020-10-28 13:30:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1332 [2020-10-28 13:30:58,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:58,781 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:58,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:30:58,781 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash 709433142, now seen corresponding path program 1 times [2020-10-28 13:30:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202018132] [2020-10-28 13:30:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1357 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:31:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:31:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:31:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:04,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:04,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:31:04,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:31:04,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:04,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:31:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:31:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:04,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:31:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-28 13:31:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:05,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:31:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2020-10-28 13:31:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:05,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:31:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 890 [2020-10-28 13:31:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:05,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:05,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:31:05,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1000 [2020-10-28 13:31:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:05,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:31:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3145 backedges. 630 proven. 635 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2020-10-28 13:31:06,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202018132] [2020-10-28 13:31:06,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:06,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:06,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121555789] [2020-10-28 13:31:06,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:06,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:06,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:06,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:06,901 INFO L87 Difference]: Start difference. First operand 8270 states and 8983 transitions. Second operand 7 states. [2020-10-28 13:31:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:11,110 INFO L93 Difference]: Finished difference Result 16556 states and 18034 transitions. [2020-10-28 13:31:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:31:11,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1331 [2020-10-28 13:31:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:11,139 INFO L225 Difference]: With dead ends: 16556 [2020-10-28 13:31:11,139 INFO L226 Difference]: Without dead ends: 8629 [2020-10-28 13:31:11,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:31:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8629 states. [2020-10-28 13:31:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8629 to 8611. [2020-10-28 13:31:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8611 states. [2020-10-28 13:31:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 9336 transitions. [2020-10-28 13:31:11,316 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 9336 transitions. Word has length 1331 [2020-10-28 13:31:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:11,317 INFO L481 AbstractCegarLoop]: Abstraction has 8611 states and 9336 transitions. [2020-10-28 13:31:11,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 9336 transitions. [2020-10-28 13:31:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2020-10-28 13:31:11,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:11,350 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:11,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:31:11,350 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:11,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1662401614, now seen corresponding path program 1 times [2020-10-28 13:31:11,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:11,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105141167] [2020-10-28 13:31:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:16,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:16,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1363 [2020-10-28 13:31:16,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:16,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 13:31:16,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:16,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:16,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:16,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:31:16,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:31:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:16,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:31:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:17,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:31:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:31:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:31:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:31:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:31:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:31:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2020-10-28 13:31:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:18,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:31:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-28 13:31:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:18,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:31:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-28 13:31:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:18,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:18,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:31:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:31:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:18,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:31:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:18,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:18,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3646 backedges. 471 proven. 741 refuted. 0 times theorem prover too weak. 2434 trivial. 0 not checked. [2020-10-28 13:31:20,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105141167] [2020-10-28 13:31:20,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:20,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:31:20,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457799214] [2020-10-28 13:31:20,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:31:20,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:20,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:31:20,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:31:20,145 INFO L87 Difference]: Start difference. First operand 8611 states and 9336 transitions. Second operand 8 states. [2020-10-28 13:31:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:26,534 INFO L93 Difference]: Finished difference Result 20283 states and 22295 transitions. [2020-10-28 13:31:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:31:26,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1335 [2020-10-28 13:31:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:26,568 INFO L225 Difference]: With dead ends: 20283 [2020-10-28 13:31:26,568 INFO L226 Difference]: Without dead ends: 12015 [2020-10-28 13:31:26,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:31:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12015 states. [2020-10-28 13:31:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 11672. [2020-10-28 13:31:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11672 states. [2020-10-28 13:31:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11672 states to 11672 states and 12610 transitions. [2020-10-28 13:31:26,777 INFO L78 Accepts]: Start accepts. Automaton has 11672 states and 12610 transitions. Word has length 1335 [2020-10-28 13:31:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:26,778 INFO L481 AbstractCegarLoop]: Abstraction has 11672 states and 12610 transitions. [2020-10-28 13:31:26,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:31:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 11672 states and 12610 transitions. [2020-10-28 13:31:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2020-10-28 13:31:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:26,814 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 13:31:26,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:31:26,814 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1431630270, now seen corresponding path program 1 times [2020-10-28 13:31:26,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:26,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256869790] [2020-10-28 13:31:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1509 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 967 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:31:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:32,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:31:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:31:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:31:32,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-28 13:31:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:31:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-28 13:31:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:31:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:31:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1256 [2020-10-28 13:31:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:33,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:31:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1327 [2020-10-28 13:31:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:31:33,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:31:33,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:33,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:31:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4407 backedges. 1326 proven. 183 refuted. 0 times theorem prover too weak. 2898 trivial. 0 not checked. [2020-10-28 13:31:34,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256869790] [2020-10-28 13:31:34,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:34,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:34,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841026826] [2020-10-28 13:31:34,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:34,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:34,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:34,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:34,862 INFO L87 Difference]: Start difference. First operand 11672 states and 12610 transitions. Second operand 7 states. [2020-10-28 13:31:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:39,183 INFO L93 Difference]: Finished difference Result 24702 states and 26931 transitions. [2020-10-28 13:31:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:39,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1479 [2020-10-28 13:31:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:39,225 INFO L225 Difference]: With dead ends: 24702 [2020-10-28 13:31:39,226 INFO L226 Difference]: Without dead ends: 13373 [2020-10-28 13:31:39,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2020-10-28 13:31:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13367. [2020-10-28 13:31:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13367 states. [2020-10-28 13:31:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 14326 transitions. [2020-10-28 13:31:39,479 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 14326 transitions. Word has length 1479 [2020-10-28 13:31:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:39,481 INFO L481 AbstractCegarLoop]: Abstraction has 13367 states and 14326 transitions. [2020-10-28 13:31:39,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 14326 transitions. [2020-10-28 13:31:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2020-10-28 13:31:39,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:39,521 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 13:31:39,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:31:39,522 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash -467263994, now seen corresponding path program 1 times [2020-10-28 13:31:39,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:39,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296913590] [2020-10-28 13:31:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1585 [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 823 [2020-10-28 13:31:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-28 13:31:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:31:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:45,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:31:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:45,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:31:45,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:31:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:31:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:31:45,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:31:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-28 13:31:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:31:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:31:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:45,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:31:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-28 13:31:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:31:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1029 [2020-10-28 13:31:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:31:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:46,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:46,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:31:46,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:46,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1330 [2020-10-28 13:31:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:31:46,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1401 [2020-10-28 13:31:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:31:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:31:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:46,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:31:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5102 backedges. 1488 proven. 530 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2020-10-28 13:31:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296913590] [2020-10-28 13:31:47,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:47,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:31:47,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43632221] [2020-10-28 13:31:47,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:31:47,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:31:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:31:47,957 INFO L87 Difference]: Start difference. First operand 13367 states and 14326 transitions. Second operand 8 states. [2020-10-28 13:31:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:53,057 INFO L93 Difference]: Finished difference Result 28434 states and 30432 transitions. [2020-10-28 13:31:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:31:53,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1553 [2020-10-28 13:31:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:53,107 INFO L225 Difference]: With dead ends: 28434 [2020-10-28 13:31:53,107 INFO L226 Difference]: Without dead ends: 15410 [2020-10-28 13:31:53,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:31:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15410 states. [2020-10-28 13:31:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15410 to 15404. [2020-10-28 13:31:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15404 states. [2020-10-28 13:31:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15404 states to 15404 states and 16402 transitions. [2020-10-28 13:31:53,408 INFO L78 Accepts]: Start accepts. Automaton has 15404 states and 16402 transitions. Word has length 1553 [2020-10-28 13:31:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:53,410 INFO L481 AbstractCegarLoop]: Abstraction has 15404 states and 16402 transitions. [2020-10-28 13:31:53,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:31:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15404 states and 16402 transitions. [2020-10-28 13:31:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2020-10-28 13:31:53,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:53,452 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:53,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:31:53,453 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash 797552710, now seen corresponding path program 1 times [2020-10-28 13:31:53,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:53,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799964541] [2020-10-28 13:31:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:58,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:58,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1681 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 887 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:31:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:59,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:31:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:31:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:31:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:31:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:31:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:31:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1127 [2020-10-28 13:32:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:32:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:32:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1428 [2020-10-28 13:32:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:00,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1499 [2020-10-28 13:32:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:32:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4991 backedges. 1258 proven. 430 refuted. 0 times theorem prover too weak. 3303 trivial. 0 not checked. [2020-10-28 13:32:01,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799964541] [2020-10-28 13:32:01,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:01,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064212258] [2020-10-28 13:32:01,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:01,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:01,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:01,840 INFO L87 Difference]: Start difference. First operand 15404 states and 16402 transitions. Second operand 7 states. [2020-10-28 13:32:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:08,202 INFO L93 Difference]: Finished difference Result 33169 states and 35470 transitions. [2020-10-28 13:32:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:32:08,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1651 [2020-10-28 13:32:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:08,244 INFO L225 Difference]: With dead ends: 33169 [2020-10-28 13:32:08,244 INFO L226 Difference]: Without dead ends: 18108 [2020-10-28 13:32:08,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:32:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18108 states. [2020-10-28 13:32:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18108 to 18106. [2020-10-28 13:32:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18106 states. [2020-10-28 13:32:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18106 states to 18106 states and 19202 transitions. [2020-10-28 13:32:08,565 INFO L78 Accepts]: Start accepts. Automaton has 18106 states and 19202 transitions. Word has length 1651 [2020-10-28 13:32:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:08,566 INFO L481 AbstractCegarLoop]: Abstraction has 18106 states and 19202 transitions. [2020-10-28 13:32:08,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18106 states and 19202 transitions. [2020-10-28 13:32:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1851 [2020-10-28 13:32:08,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:08,617 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:08,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:32:08,617 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1621269228, now seen corresponding path program 1 times [2020-10-28 13:32:08,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:08,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949046769] [2020-10-28 13:32:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking...