/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:55,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:55,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:55,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:55,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:55,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:55,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:55,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:55,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:55,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:55,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:55,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:55,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:55,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:55,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:55,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:55,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:55,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:55,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:55,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:55,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:55,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:55,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:55,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:55,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:55,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:55,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:55,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:55,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:55,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:55,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:55,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:55,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:55,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:55,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:55,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:55,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:55,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:55,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:55,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:55,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:55,446 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 13:21:55,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:55,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:55,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:55,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:55,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:55,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:55,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:55,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:55,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:55,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:55,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:55,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:55,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:55,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:55,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:55,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:55,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:55,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:55,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:55,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:55,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:55,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:55,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:55,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:55,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:55,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:55,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:55,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:55,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:55,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:55,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:55,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:55,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:55,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:55,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:55,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-28 13:21:56,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db532e5b/a5f22b4e40a24b848a84ebd640fd96d8/FLAGe27806f02 [2020-10-28 13:21:56,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:56,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-28 13:21:57,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db532e5b/a5f22b4e40a24b848a84ebd640fd96d8/FLAGe27806f02 [2020-10-28 13:21:57,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db532e5b/a5f22b4e40a24b848a84ebd640fd96d8 [2020-10-28 13:21:57,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:57,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:57,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:57,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:57,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:57,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:57" (1/1) ... [2020-10-28 13:21:57,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:57, skipping insertion in model container [2020-10-28 13:21:57,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:57" (1/1) ... [2020-10-28 13:21:57,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:57,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:57,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:57,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:58,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:58,243 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:58,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58 WrapperNode [2020-10-28 13:21:58,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:58,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:58,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:58,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:58,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (1/1) ... [2020-10-28 13:21:58,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:58,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:58,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:58,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:58,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (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 13:21:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:22:01,179 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:22:01,180 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:22:01,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:22:01 BoogieIcfgContainer [2020-10-28 13:22:01,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:22:01,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:22:01,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:22:01,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:22:01,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:57" (1/3) ... [2020-10-28 13:22:01,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a419e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:22:01, skipping insertion in model container [2020-10-28 13:22:01,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:58" (2/3) ... [2020-10-28 13:22:01,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a419e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:22:01, skipping insertion in model container [2020-10-28 13:22:01,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:22:01" (3/3) ... [2020-10-28 13:22:01,198 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label29.c [2020-10-28 13:22:01,210 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:22:01,217 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:22:01,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:22:01,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:22:01,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:22:01,262 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:22:01,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:22:01,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:22:01,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:22:01,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:22:01,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:22:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:22:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 13:22:01,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:01,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:01,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1859974700, now seen corresponding path program 1 times [2020-10-28 13:22:01,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:01,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940565374] [2020-10-28 13:22:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:01,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:02,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 13:22:02,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-28 13:22:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:02,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 13:22:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:02,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:02,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:22:02,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:02,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:02,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:02,374 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 13:22:02,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940565374] [2020-10-28 13:22:02,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:02,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:22:02,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801815318] [2020-10-28 13:22:02,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:22:02,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:02,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:22:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:22:02,407 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:22:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:10,123 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-28 13:22:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:22:10,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-28 13:22:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:10,169 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:22:10,170 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:22:10,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:22:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-28 13:22:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-28 13:22:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-28 13:22:10,370 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 53 [2020-10-28 13:22:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:10,372 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-28 13:22:10,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:22:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-28 13:22:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 13:22:10,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:10,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:10,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:10,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:10,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1906577101, now seen corresponding path program 1 times [2020-10-28 13:22:10,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:10,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675941154] [2020-10-28 13:22:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:11,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 13:22:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-28 13:22:11,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:11,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:22:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:11,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:11,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:22:11,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:11,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:11,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:22:12,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:22:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675941154] [2020-10-28 13:22:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:22:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343889887] [2020-10-28 13:22:12,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:12,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:12,205 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 8 states. [2020-10-28 13:22:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:20,266 INFO L93 Difference]: Finished difference Result 4148 states and 6100 transitions. [2020-10-28 13:22:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:22:20,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-28 13:22:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:20,288 INFO L225 Difference]: With dead ends: 4148 [2020-10-28 13:22:20,289 INFO L226 Difference]: Without dead ends: 3119 [2020-10-28 13:22:20,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:22:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2020-10-28 13:22:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3103. [2020-10-28 13:22:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2020-10-28 13:22:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4163 transitions. [2020-10-28 13:22:20,392 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4163 transitions. Word has length 129 [2020-10-28 13:22:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:20,393 INFO L481 AbstractCegarLoop]: Abstraction has 3103 states and 4163 transitions. [2020-10-28 13:22:20,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4163 transitions. [2020-10-28 13:22:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-28 13:22:20,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:20,397 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:20,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:20,398 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:20,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1324081796, now seen corresponding path program 1 times [2020-10-28 13:22:20,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641591881] [2020-10-28 13:22:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:25,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:25,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-28 13:22:25,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:22:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4732 [2020-10-28 13:22:25,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:25,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:22:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:25,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:22:25,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:25,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:25,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:22:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 13:22:25,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641591881] [2020-10-28 13:22:25,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:25,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:22:25,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465582678] [2020-10-28 13:22:25,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:22:25,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:25,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:22:25,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:22:25,807 INFO L87 Difference]: Start difference. First operand 3103 states and 4163 transitions. Second operand 5 states. [2020-10-28 13:22:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:30,575 INFO L93 Difference]: Finished difference Result 7234 states and 10042 transitions. [2020-10-28 13:22:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:22:30,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-28 13:22:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:30,607 INFO L225 Difference]: With dead ends: 7234 [2020-10-28 13:22:30,607 INFO L226 Difference]: Without dead ends: 4137 [2020-10-28 13:22:30,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:22:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2020-10-28 13:22:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 4133. [2020-10-28 13:22:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2020-10-28 13:22:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 5382 transitions. [2020-10-28 13:22:30,765 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 5382 transitions. Word has length 227 [2020-10-28 13:22:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:30,769 INFO L481 AbstractCegarLoop]: Abstraction has 4133 states and 5382 transitions. [2020-10-28 13:22:30,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:22:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 5382 transitions. [2020-10-28 13:22:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-28 13:22:30,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:30,788 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, 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, 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] [2020-10-28 13:22:30,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:30,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:30,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1504237424, now seen corresponding path program 1 times [2020-10-28 13:22:30,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:30,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194560877] [2020-10-28 13:22:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:35,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-28 13:22:35,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:22:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 13:22:35,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:35,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 13:22:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:36,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:22:36,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:36,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:22:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:22:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:22:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:22:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:22:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-28 13:22:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:22:36,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:22:36,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:22:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 356 proven. 264 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 13:22:37,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194560877] [2020-10-28 13:22:37,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:37,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:37,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72379705] [2020-10-28 13:22:37,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:37,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:37,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:37,243 INFO L87 Difference]: Start difference. First operand 4133 states and 5382 transitions. Second operand 8 states. [2020-10-28 13:22:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:43,232 INFO L93 Difference]: Finished difference Result 10369 states and 13839 transitions. [2020-10-28 13:22:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:43,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 444 [2020-10-28 13:22:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:43,263 INFO L225 Difference]: With dead ends: 10369 [2020-10-28 13:22:43,263 INFO L226 Difference]: Without dead ends: 5185 [2020-10-28 13:22:43,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:22:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2020-10-28 13:22:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 4818. [2020-10-28 13:22:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-10-28 13:22:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 5414 transitions. [2020-10-28 13:22:43,418 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 5414 transitions. Word has length 444 [2020-10-28 13:22:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:43,418 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 5414 transitions. [2020-10-28 13:22:43,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 5414 transitions. [2020-10-28 13:22:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-28 13:22:43,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:43,439 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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:43,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:43,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:43,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1839633557, now seen corresponding path program 1 times [2020-10-28 13:22:43,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:43,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427655152] [2020-10-28 13:22:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:43,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-28 13:22:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:22:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:22:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:22:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:22:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:22:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:22:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:22:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:22:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-28 13:22:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:49,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:22:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:22:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-28 13:22:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:22:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:22:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:22:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 334 proven. 325 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2020-10-28 13:22:50,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427655152] [2020-10-28 13:22:50,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:50,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:50,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303435753] [2020-10-28 13:22:50,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:50,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:50,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:50,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:50,215 INFO L87 Difference]: Start difference. First operand 4818 states and 5414 transitions. Second operand 8 states. [2020-10-28 13:22:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:56,494 INFO L93 Difference]: Finished difference Result 13397 states and 15280 transitions. [2020-10-28 13:22:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:22:56,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 614 [2020-10-28 13:22:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:56,533 INFO L225 Difference]: With dead ends: 13397 [2020-10-28 13:22:56,534 INFO L226 Difference]: Without dead ends: 8585 [2020-10-28 13:22:56,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:22:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2020-10-28 13:22:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 7570. [2020-10-28 13:22:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7570 states. [2020-10-28 13:22:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8434 transitions. [2020-10-28 13:22:56,758 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8434 transitions. Word has length 614 [2020-10-28 13:22:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:56,759 INFO L481 AbstractCegarLoop]: Abstraction has 7570 states and 8434 transitions. [2020-10-28 13:22:56,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8434 transitions. [2020-10-28 13:22:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-28 13:22:56,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:56,806 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:56,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:22:56,807 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1486900333, now seen corresponding path program 1 times [2020-10-28 13:22:56,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:56,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460998570] [2020-10-28 13:22:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-28 13:23:02,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 13:23:02,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:23:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:23:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:02,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:23:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 13:23:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:03,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:23:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-28 13:23:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-28 13:23:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:23:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 481 proven. 356 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-28 13:23:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460998570] [2020-10-28 13:23:04,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:04,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:04,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423994635] [2020-10-28 13:23:04,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:04,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:04,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:04,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:04,466 INFO L87 Difference]: Start difference. First operand 7570 states and 8434 transitions. Second operand 7 states. [2020-10-28 13:23:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:08,879 INFO L93 Difference]: Finished difference Result 14805 states and 16540 transitions. [2020-10-28 13:23:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:23:08,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 912 [2020-10-28 13:23:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:08,927 INFO L225 Difference]: With dead ends: 14805 [2020-10-28 13:23:08,928 INFO L226 Difference]: Without dead ends: 7578 [2020-10-28 13:23:08,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:23:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7578 states. [2020-10-28 13:23:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7578 to 7572. [2020-10-28 13:23:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7572 states. [2020-10-28 13:23:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7572 states to 7572 states and 8433 transitions. [2020-10-28 13:23:09,157 INFO L78 Accepts]: Start accepts. Automaton has 7572 states and 8433 transitions. Word has length 912 [2020-10-28 13:23:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:09,159 INFO L481 AbstractCegarLoop]: Abstraction has 7572 states and 8433 transitions. [2020-10-28 13:23:09,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7572 states and 8433 transitions. [2020-10-28 13:23:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-28 13:23:09,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:09,187 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:09,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:23:09,187 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:09,188 INFO L82 PathProgramCache]: Analyzing trace with hash -498443204, now seen corresponding path program 1 times [2020-10-28 13:23:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:09,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301863751] [2020-10-28 13:23:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-28 13:23:14,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:14,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:14,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:14,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:14,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:14,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:23:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:15,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:15,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-10-28 13:23:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2020-10-28 13:23:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:15,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:15,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2020-10-28 13:23:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:23:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:23:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:15,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:23:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2181 backedges. 618 proven. 356 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-10-28 13:23:16,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301863751] [2020-10-28 13:23:16,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:16,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:16,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21345728] [2020-10-28 13:23:16,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:16,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:16,306 INFO L87 Difference]: Start difference. First operand 7572 states and 8433 transitions. Second operand 7 states. [2020-10-28 13:23:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:20,846 INFO L93 Difference]: Finished difference Result 16180 states and 18207 transitions. [2020-10-28 13:23:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:20,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-28 13:23:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:20,873 INFO L225 Difference]: With dead ends: 16180 [2020-10-28 13:23:20,874 INFO L226 Difference]: Without dead ends: 8951 [2020-10-28 13:23:20,890 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 13:23:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8951 states. [2020-10-28 13:23:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8951 to 8945. [2020-10-28 13:23:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8945 states. [2020-10-28 13:23:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 9922 transitions. [2020-10-28 13:23:21,105 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 9922 transitions. Word has length 980 [2020-10-28 13:23:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:21,108 INFO L481 AbstractCegarLoop]: Abstraction has 8945 states and 9922 transitions. [2020-10-28 13:23:21,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 9922 transitions. [2020-10-28 13:23:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-28 13:23:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:21,134 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:21,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:21,135 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 265353946, now seen corresponding path program 1 times [2020-10-28 13:23:21,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:21,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846417340] [2020-10-28 13:23:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:23:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:26,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:23:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:23:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:23:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:23:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:27,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-28 13:23:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-28 13:23:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-28 13:23:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:27,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:27,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:23:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 613 proven. 356 refuted. 0 times theorem prover too weak. 1202 trivial. 0 not checked. [2020-10-28 13:23:28,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846417340] [2020-10-28 13:23:28,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:28,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:28,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748476579] [2020-10-28 13:23:28,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:28,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:28,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:28,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:28,199 INFO L87 Difference]: Start difference. First operand 8945 states and 9922 transitions. Second operand 7 states. [2020-10-28 13:23:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:32,508 INFO L93 Difference]: Finished difference Result 17896 states and 19870 transitions. [2020-10-28 13:23:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:32,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 983 [2020-10-28 13:23:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:32,535 INFO L225 Difference]: With dead ends: 17896 [2020-10-28 13:23:32,535 INFO L226 Difference]: Without dead ends: 9294 [2020-10-28 13:23:32,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 13:23:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2020-10-28 13:23:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 9286. [2020-10-28 13:23:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9286 states. [2020-10-28 13:23:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9286 states to 9286 states and 9998 transitions. [2020-10-28 13:23:32,765 INFO L78 Accepts]: Start accepts. Automaton has 9286 states and 9998 transitions. Word has length 983 [2020-10-28 13:23:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:32,767 INFO L481 AbstractCegarLoop]: Abstraction has 9286 states and 9998 transitions. [2020-10-28 13:23:32,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9286 states and 9998 transitions. [2020-10-28 13:23:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2020-10-28 13:23:32,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:32,796 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, 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, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 13:23:32,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:32,797 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash -175725312, now seen corresponding path program 1 times [2020-10-28 13:23:32,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:32,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467976841] [2020-10-28 13:23:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:33,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1092 [2020-10-28 13:23:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:23:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:23:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:23:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:23:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:23:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 13:23:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:23:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-28 13:23:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:23:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:23:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:23:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-28 13:23:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 887 [2020-10-28 13:23:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:23:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 619 proven. 385 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2020-10-28 13:23:40,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467976841] [2020-10-28 13:23:40,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:40,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:40,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132028402] [2020-10-28 13:23:40,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:40,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:40,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:40,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:40,020 INFO L87 Difference]: Start difference. First operand 9286 states and 9998 transitions. Second operand 7 states. [2020-10-28 13:23:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:45,096 INFO L93 Difference]: Finished difference Result 21646 states and 23515 transitions. [2020-10-28 13:23:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:45,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1070 [2020-10-28 13:23:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:45,151 INFO L225 Difference]: With dead ends: 21646 [2020-10-28 13:23:45,152 INFO L226 Difference]: Without dead ends: 12703 [2020-10-28 13:23:45,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12703 states. [2020-10-28 13:23:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12703 to 12356. [2020-10-28 13:23:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12356 states. [2020-10-28 13:23:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12356 states to 12356 states and 13312 transitions. [2020-10-28 13:23:45,485 INFO L78 Accepts]: Start accepts. Automaton has 12356 states and 13312 transitions. Word has length 1070 [2020-10-28 13:23:45,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:45,487 INFO L481 AbstractCegarLoop]: Abstraction has 12356 states and 13312 transitions. [2020-10-28 13:23:45,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12356 states and 13312 transitions. [2020-10-28 13:23:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-28 13:23:45,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:45,518 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, 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, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 13:23:45,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:45,518 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1321083452, now seen corresponding path program 1 times [2020-10-28 13:23:45,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:45,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190786312] [2020-10-28 13:23:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:23:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:23:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:23:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:23:51,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:23:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:23:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:23:51,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:23:51,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:23:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-28 13:23:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 889 [2020-10-28 13:23:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:23:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 727 proven. 244 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2020-10-28 13:23:52,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190786312] [2020-10-28 13:23:52,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:52,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:52,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574839965] [2020-10-28 13:23:52,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:52,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:52,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:52,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:52,409 INFO L87 Difference]: Start difference. First operand 12356 states and 13312 transitions. Second operand 7 states. [2020-10-28 13:23:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:56,456 INFO L93 Difference]: Finished difference Result 26062 states and 28279 transitions. [2020-10-28 13:23:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:56,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1072 [2020-10-28 13:23:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:56,497 INFO L225 Difference]: With dead ends: 26062 [2020-10-28 13:23:56,497 INFO L226 Difference]: Without dead ends: 14049 [2020-10-28 13:23:56,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14049 states. [2020-10-28 13:23:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14049 to 13704. [2020-10-28 13:23:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13704 states. [2020-10-28 13:23:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13704 states to 13704 states and 14647 transitions. [2020-10-28 13:23:56,785 INFO L78 Accepts]: Start accepts. Automaton has 13704 states and 14647 transitions. Word has length 1072 [2020-10-28 13:23:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:56,787 INFO L481 AbstractCegarLoop]: Abstraction has 13704 states and 14647 transitions. [2020-10-28 13:23:56,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13704 states and 14647 transitions. [2020-10-28 13:23:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-28 13:23:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:56,821 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:56,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:23:56,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:56,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1017440298, now seen corresponding path program 1 times [2020-10-28 13:23:56,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:56,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280803750] [2020-10-28 13:23:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-28 13:24:02,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-28 13:24:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-28 13:24:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:24:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:02,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:24:02,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:24:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:24:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-28 13:24:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:24:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:24:04,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:04,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:24:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:24:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 1014 proven. 70 refuted. 0 times theorem prover too weak. 1172 trivial. 0 not checked. [2020-10-28 13:24:06,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280803750] [2020-10-28 13:24:06,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:06,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929492117] [2020-10-28 13:24:06,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:06,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:06,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:06,215 INFO L87 Difference]: Start difference. First operand 13704 states and 14647 transitions. Second operand 7 states. [2020-10-28 13:24:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:10,107 INFO L93 Difference]: Finished difference Result 27075 states and 28962 transitions. [2020-10-28 13:24:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:24:10,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1122 [2020-10-28 13:24:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:10,150 INFO L225 Difference]: With dead ends: 27075 [2020-10-28 13:24:10,150 INFO L226 Difference]: Without dead ends: 13714 [2020-10-28 13:24:10,168 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 13:24:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13714 states. [2020-10-28 13:24:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13714 to 13706. [2020-10-28 13:24:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13706 states. [2020-10-28 13:24:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 14642 transitions. [2020-10-28 13:24:10,417 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 14642 transitions. Word has length 1122 [2020-10-28 13:24:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:10,418 INFO L481 AbstractCegarLoop]: Abstraction has 13706 states and 14642 transitions. [2020-10-28 13:24:10,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 14642 transitions. [2020-10-28 13:24:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2020-10-28 13:24:10,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:10,459 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:24:10,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:24:10,461 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2003332664, now seen corresponding path program 1 times [2020-10-28 13:24:10,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:10,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288071783] [2020-10-28 13:24:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1292 [2020-10-28 13:24:15,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-28 13:24:15,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 733 [2020-10-28 13:24:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:24:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:16,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:24:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:16,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:24:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:24:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:24:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-28 13:24:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:24:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:17,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1083 [2020-10-28 13:24:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:17,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 1120 proven. 244 refuted. 0 times theorem prover too weak. 2214 trivial. 0 not checked. [2020-10-28 13:24:18,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288071783] [2020-10-28 13:24:18,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:18,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:18,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753571735] [2020-10-28 13:24:18,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:18,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:18,559 INFO L87 Difference]: Start difference. First operand 13706 states and 14642 transitions. Second operand 7 states. [2020-10-28 13:24:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:22,612 INFO L93 Difference]: Finished difference Result 27412 states and 29287 transitions. [2020-10-28 13:24:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:24:22,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1266 [2020-10-28 13:24:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:22,649 INFO L225 Difference]: With dead ends: 27412 [2020-10-28 13:24:22,649 INFO L226 Difference]: Without dead ends: 14049 [2020-10-28 13:24:22,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:24:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14049 states. [2020-10-28 13:24:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14049 to 14043. [2020-10-28 13:24:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14043 states. [2020-10-28 13:24:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 14982 transitions. [2020-10-28 13:24:22,919 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 14982 transitions. Word has length 1266 [2020-10-28 13:24:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:22,920 INFO L481 AbstractCegarLoop]: Abstraction has 14043 states and 14982 transitions. [2020-10-28 13:24:22,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 14982 transitions. [2020-10-28 13:24:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2020-10-28 13:24:22,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:22,973 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, 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, 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, 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, 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, 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] [2020-10-28 13:24:22,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:24:22,974 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:22,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1020278650, now seen corresponding path program 1 times [2020-10-28 13:24:22,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:22,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367289834] [2020-10-28 13:24:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1323 [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:24:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:24:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:24:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:24:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-28 13:24:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:24:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:24:29,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-28 13:24:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 13:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-28 13:24:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-28 13:24:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 543 proven. 768 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2020-10-28 13:24:30,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367289834] [2020-10-28 13:24:30,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:30,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:30,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092911779] [2020-10-28 13:24:30,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:30,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:30,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:30,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:30,886 INFO L87 Difference]: Start difference. First operand 14043 states and 14982 transitions. Second operand 7 states. [2020-10-28 13:24:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:34,952 INFO L93 Difference]: Finished difference Result 29103 states and 31092 transitions. [2020-10-28 13:24:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:34,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1297 [2020-10-28 13:24:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:34,985 INFO L225 Difference]: With dead ends: 29103 [2020-10-28 13:24:34,986 INFO L226 Difference]: Without dead ends: 15403 [2020-10-28 13:24:35,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:24:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15403 states. [2020-10-28 13:24:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15403 to 14725. [2020-10-28 13:24:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14725 states. [2020-10-28 13:24:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14725 states to 14725 states and 15701 transitions. [2020-10-28 13:24:35,278 INFO L78 Accepts]: Start accepts. Automaton has 14725 states and 15701 transitions. Word has length 1297 [2020-10-28 13:24:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:35,279 INFO L481 AbstractCegarLoop]: Abstraction has 14725 states and 15701 transitions. [2020-10-28 13:24:35,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 14725 states and 15701 transitions. [2020-10-28 13:24:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1359 [2020-10-28 13:24:35,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:35,311 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, 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, 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, 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, 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, 2, 2, 2, 2, 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] [2020-10-28 13:24:35,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:24:35,312 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:35,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash -705281196, now seen corresponding path program 1 times [2020-10-28 13:24:35,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:35,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718224912] [2020-10-28 13:24:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:41,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1384 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5955 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1189 [2020-10-28 13:24:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 13:24:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:41,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:41,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:42,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:42,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:24:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:24:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-28 13:24:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:42,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:24:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:24:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2020-10-28 13:24:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3975 backedges. 1243 proven. 2 refuted. 0 times theorem prover too weak. 2730 trivial. 0 not checked. [2020-10-28 13:24:43,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718224912] [2020-10-28 13:24:43,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:43,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:43,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481126708] [2020-10-28 13:24:43,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:43,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:43,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:43,926 INFO L87 Difference]: Start difference. First operand 14725 states and 15701 transitions. Second operand 7 states. [2020-10-28 13:24:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:48,259 INFO L93 Difference]: Finished difference Result 31507 states and 33701 transitions. [2020-10-28 13:24:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:24:48,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1358 [2020-10-28 13:24:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:48,298 INFO L225 Difference]: With dead ends: 31507 [2020-10-28 13:24:48,298 INFO L226 Difference]: Without dead ends: 15754 [2020-10-28 13:24:48,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2020-10-28 13:24:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15722. [2020-10-28 13:24:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15722 states. [2020-10-28 13:24:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15722 states to 15722 states and 16388 transitions. [2020-10-28 13:24:48,598 INFO L78 Accepts]: Start accepts. Automaton has 15722 states and 16388 transitions. Word has length 1358 [2020-10-28 13:24:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:48,599 INFO L481 AbstractCegarLoop]: Abstraction has 15722 states and 16388 transitions. [2020-10-28 13:24:48,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:48,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15722 states and 16388 transitions. [2020-10-28 13:24:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1567 [2020-10-28 13:24:48,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:48,638 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, 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, 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, 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, 5, 5, 5, 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, 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] [2020-10-28 13:24:48,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:24:48,639 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash 477635157, now seen corresponding path program 1 times [2020-10-28 13:24:48,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:48,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229937733] [2020-10-28 13:24:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1594 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1077 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:54,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:54,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:24:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:24:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:54,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:24:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:54,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-28 13:24:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1338 [2020-10-28 13:24:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1450 [2020-10-28 13:24:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:24:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4893 backedges. 1517 proven. 179 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-10-28 13:24:58,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229937733] [2020-10-28 13:24:58,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:58,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:58,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487283424] [2020-10-28 13:24:58,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:58,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:58,367 INFO L87 Difference]: Start difference. First operand 15722 states and 16388 transitions. Second operand 7 states. [2020-10-28 13:25:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:05,240 INFO L93 Difference]: Finished difference Result 32134 states and 33540 transitions. [2020-10-28 13:25:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:25:05,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1566 [2020-10-28 13:25:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:05,280 INFO L225 Difference]: With dead ends: 32134 [2020-10-28 13:25:05,280 INFO L226 Difference]: Without dead ends: 16755 [2020-10-28 13:25:05,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:25:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16755 states. [2020-10-28 13:25:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16755 to 16400. [2020-10-28 13:25:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16400 states. [2020-10-28 13:25:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16400 states to 16400 states and 17103 transitions. [2020-10-28 13:25:05,709 INFO L78 Accepts]: Start accepts. Automaton has 16400 states and 17103 transitions. Word has length 1566 [2020-10-28 13:25:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:05,711 INFO L481 AbstractCegarLoop]: Abstraction has 16400 states and 17103 transitions. [2020-10-28 13:25:05,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 16400 states and 17103 transitions. [2020-10-28 13:25:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1613 [2020-10-28 13:25:05,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:05,751 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, 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, 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:25:05,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:25:05,751 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:05,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:05,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1089544945, now seen corresponding path program 1 times [2020-10-28 13:25:05,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:05,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009405828] [2020-10-28 13:25:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1642 [2020-10-28 13:25:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1122 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-28 13:25:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:11,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:25:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:11,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:25:11,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:25:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:25:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:25:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:25:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:25:12,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:25:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:25:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 321 [2020-10-28 13:25:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:25:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 13:25:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2020-10-28 13:25:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:13,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:25:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1384 [2020-10-28 13:25:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:25:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:25:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:13,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:25:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1496 [2020-10-28 13:25:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 1509 proven. 179 refuted. 0 times theorem prover too weak. 2957 trivial. 0 not checked. [2020-10-28 13:25:15,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009405828] [2020-10-28 13:25:15,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:15,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:15,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333093790] [2020-10-28 13:25:15,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:15,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:15,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:15,136 INFO L87 Difference]: Start difference. First operand 16400 states and 17103 transitions. Second operand 7 states.