/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=DEEPEST --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/array-crafted/bor1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:29,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:29,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:29,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:29,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:29,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:29,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:29,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:29,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:29,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:29,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:29,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:29,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:29,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:29,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:29,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:29,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:29,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:29,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:29,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:29,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:29,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:29,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:29,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:29,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:29,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:29,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:29,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:29,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:29,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:29,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:29,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:29,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:29,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:29,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:29,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:29,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:29,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:29,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:29,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:29,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:29,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:03:29,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:29,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:29,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:29,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:29,455 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:29,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:29,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:29,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:29,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:29,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:29,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:29,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:29,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:29,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:29,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:29,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:29,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:29,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:29,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:29,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:29,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:29,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:29,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:29,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:29,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:29,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:29,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:29,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:29,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:29,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:29,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:29,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:29,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:29,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:29,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:29,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor1.i [2020-10-27 14:03:30,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc712c2e/71229b7c7eb04c0c938b3adc6295e844/FLAG6c29d2e32 [2020-10-27 14:03:30,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:30,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor1.i [2020-10-27 14:03:30,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc712c2e/71229b7c7eb04c0c938b3adc6295e844/FLAG6c29d2e32 [2020-10-27 14:03:31,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc712c2e/71229b7c7eb04c0c938b3adc6295e844 [2020-10-27 14:03:31,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:31,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:31,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:31,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:31,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:31,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec1e311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31, skipping insertion in model container [2020-10-27 14:03:31,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:31,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:31,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:31,327 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:31,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:31,374 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:31,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31 WrapperNode [2020-10-27 14:03:31,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:31,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:31,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:31,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:31,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:31,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:31,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:31,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:31,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-27 14:03:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-27 14:03:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:32,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:32,041 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:32,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:32 BoogieIcfgContainer [2020-10-27 14:03:32,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:32,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:32,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:32,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:31" (1/3) ... [2020-10-27 14:03:32,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b254eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:32, skipping insertion in model container [2020-10-27 14:03:32,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31" (2/3) ... [2020-10-27 14:03:32,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b254eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:32, skipping insertion in model container [2020-10-27 14:03:32,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:32" (3/3) ... [2020-10-27 14:03:32,056 INFO L111 eAbstractionObserver]: Analyzing ICFG bor1.i [2020-10-27 14:03:32,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:32,077 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:32,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:32,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:32,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:32,124 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:32,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:32,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:32,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:32,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:32,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:03:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:32,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:32,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:32,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:32,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-27 14:03:32,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:32,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630127474] [2020-10-27 14:03:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-27 14:03:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:03:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:33,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:03:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:03:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:03:33,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:33,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630127474] [2020-10-27 14:03:33,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:33,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:33,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939705149] [2020-10-27 14:03:33,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:33,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:33,419 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:03:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:33,558 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:03:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:33,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:03:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:33,571 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:33,572 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:03:33,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:03:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:03:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:03:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:03:33,633 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:03:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:33,633 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:03:33,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:03:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:33,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:33,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:33,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:33,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-27 14:03:33,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930023471] [2020-10-27 14:03:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:35,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-27 14:03:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:03:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:03:35,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:03:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:03:35,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:35,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:35,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:35,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930023471] [2020-10-27 14:03:35,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:35,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:35,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630755814] [2020-10-27 14:03:35,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:35,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:35,232 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:03:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:35,414 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:03:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:35,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:03:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:35,416 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:03:35,416 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:03:35,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:03:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:03:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:35,441 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:03:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:35,441 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:35,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:03:35,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:35,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:35,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:35,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1866427439, now seen corresponding path program 1 times [2020-10-27 14:03:35,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:35,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688792416] [2020-10-27 14:03:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:38,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:03:38,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-27 14:03:38,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:03:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 14:03:38,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:38,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:38,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:03:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:03:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:38,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:38,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 14:03:38,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:03:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:38,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:38,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:38,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:38,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:03:38,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688792416] [2020-10-27 14:03:38,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:38,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:38,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840893953] [2020-10-27 14:03:38,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:38,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:38,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:38,776 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:03:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:38,950 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:03:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:38,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:03:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:38,952 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:03:38,952 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:38,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:38,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:03:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:38,962 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:38,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:03:38,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:38,964 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:38,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:38,965 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-27 14:03:38,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:38,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562824934] [2020-10-27 14:03:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:43,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:03:43,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:03:43,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:03:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:44,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:03:44,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:03:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:03:44,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:03:44,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562824934] [2020-10-27 14:03:44,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:44,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:44,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649272803] [2020-10-27 14:03:44,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:44,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:44,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:44,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:44,131 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:03:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:44,305 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:03:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:03:44,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:03:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:44,306 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:44,307 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:44,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:03:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:03:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:03:44,315 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:03:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:44,315 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:03:44,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:03:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:03:44,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:44,317 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:44,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:44,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:44,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-27 14:03:44,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:44,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905666288] [2020-10-27 14:03:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:03:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:03:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:03:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:49,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:49,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:03:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:03:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:03:49,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905666288] [2020-10-27 14:03:49,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:49,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:03:49,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14577845] [2020-10-27 14:03:49,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:03:49,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:49,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:03:49,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:49,562 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:03:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:49,802 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:03:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:03:49,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:03:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:49,804 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:49,804 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:03:49,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:03:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:03:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:03:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:03:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:03:49,820 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:03:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:49,821 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:03:49,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:03:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:03:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:03:49,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:49,825 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:49,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:03:49,825 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:49,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-27 14:03:49,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:49,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350277764] [2020-10-27 14:03:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:03:54,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:03:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:03:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:54,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:54,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:54,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:54,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:03:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:03:55,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:03:55,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350277764] [2020-10-27 14:03:55,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:55,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:03:55,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199862892] [2020-10-27 14:03:55,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:03:55,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:55,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:03:55,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:03:55,082 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:03:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:55,331 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:03:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:03:55,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:03:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:55,333 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:03:55,333 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:03:55,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:03:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:03:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:03:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:03:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:03:55,341 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:03:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:55,341 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:03:55,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:03:55,341 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:03:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:03:55,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:55,343 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:55,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:03:55,343 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:55,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-27 14:03:55,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:55,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404685041] [2020-10-27 14:03:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:04:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:00,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:04:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:04:00,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:04:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:04:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:04:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:04:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:00,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:04:00,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:04:00,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404685041] [2020-10-27 14:04:00,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:00,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:04:00,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891323173] [2020-10-27 14:04:00,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:04:00,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:04:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:04:00,582 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:04:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:00,828 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:04:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:04:00,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:04:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:00,829 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:04:00,830 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:04:00,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:04:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:04:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:04:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:04:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:04:00,838 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:04:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:00,839 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:04:00,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:04:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:04:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:04:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:00,843 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:00,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:04:00,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-27 14:04:00,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:00,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787016694] [2020-10-27 14:04:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:05,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:04:05,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:05,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:05,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:04:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:04:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:04:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:04:06,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787016694] [2020-10-27 14:04:06,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:06,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:04:06,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492496039] [2020-10-27 14:04:06,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:04:06,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:06,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:04:06,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:04:06,076 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:04:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:06,361 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:04:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:04:06,362 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:04:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:06,363 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:04:06,363 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:04:06,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:04:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:04:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:04:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:04:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:04:06,374 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:04:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:06,374 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:04:06,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:04:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:04:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:04:06,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:06,376 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:06,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:04:06,376 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-27 14:04:06,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:06,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348533342] [2020-10-27 14:04:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:11,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:04:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 14:04:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:04:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:04:11,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348533342] [2020-10-27 14:04:11,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:11,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:04:11,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677503733] [2020-10-27 14:04:11,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:04:11,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:04:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:11,641 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:04:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:11,995 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:04:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:04:11,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:04:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:11,997 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:04:11,997 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:04:11,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:04:11,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:04:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:04:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:04:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:04:12,005 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:04:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:12,005 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:04:12,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:04:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:04:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:04:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:12,006 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:12,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:04:12,007 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-27 14:04:12,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517419183] [2020-10-27 14:04:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:17,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:04:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:17,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:17,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:17,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:04:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:17,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:04:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:17,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 14:04:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:04:17,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517419183] [2020-10-27 14:04:17,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:17,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:04:17,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578457313] [2020-10-27 14:04:17,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:04:17,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:04:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:04:17,262 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:04:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:17,675 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:04:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:04:17,675 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:04:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:17,676 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:04:17,677 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:04:17,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:04:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:04:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:04:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:04:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:04:17,685 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:04:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:17,686 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:04:17,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:04:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:04:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:04:17,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:17,687 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:17,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:04:17,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:17,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-27 14:04:17,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:17,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098148221] [2020-10-27 14:04:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:04:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:22,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:22,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:04:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:04:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:04:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:04:22,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098148221] [2020-10-27 14:04:22,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:22,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:04:22,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733502878] [2020-10-27 14:04:22,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:04:22,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:04:22,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:04:22,966 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-27 14:04:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:23,398 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 14:04:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:04:23,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-27 14:04:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:23,400 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:04:23,400 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:04:23,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:04:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:04:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 14:04:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:04:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:04:23,412 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-27 14:04:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:23,412 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:04:23,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:04:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:04:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:04:23,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:23,413 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:23,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:04:23,414 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-27 14:04:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:23,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321708564] [2020-10-27 14:04:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:28,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 14:04:28,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:04:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:04:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:04:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:28,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:04:28,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321708564] [2020-10-27 14:04:28,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:28,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:04:28,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989103561] [2020-10-27 14:04:28,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:04:28,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:28,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:04:28,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:04:28,712 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-27 14:04:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:29,182 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:04:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:04:29,182 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-27 14:04:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:29,183 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:04:29,184 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:04:29,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:04:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:04:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 14:04:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:04:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 14:04:29,194 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-27 14:04:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:29,194 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 14:04:29,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:04:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 14:04:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:04:29,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:29,195 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:29,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:04:29,196 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:29,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-27 14:04:29,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:29,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702633057] [2020-10-27 14:04:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:04:34,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:04:34,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:04:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:04:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:04:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:04:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 14:04:34,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:04:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:34,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:04:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 121 proven. 899 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:04:34,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702633057] [2020-10-27 14:04:34,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:34,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:04:34,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142981432] [2020-10-27 14:04:34,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:04:34,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:34,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:04:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:04:34,697 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-27 14:04:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:35,171 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:04:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:04:35,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:04:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:35,173 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:04:35,173 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:04:35,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:04:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:04:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:04:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:04:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:04:35,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 100 [2020-10-27 14:04:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:35,182 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:04:35,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:04:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:04:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:04:35,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:35,184 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:35,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:04:35,184 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash -328628169, now seen corresponding path program 1 times [2020-10-27 14:04:35,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:35,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390533599] [2020-10-27 14:04:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:04:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:40,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:04:40,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:04:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 14:04:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:04:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 144 proven. 1065 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:04:40,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390533599] [2020-10-27 14:04:40,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:40,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:04:40,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493894443] [2020-10-27 14:04:40,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:04:40,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:40,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:04:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:04:40,806 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:04:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:41,373 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:04:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:04:41,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-27 14:04:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:41,374 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:04:41,374 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:04:41,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:04:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:04:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:04:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:04:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:04:41,392 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 108 [2020-10-27 14:04:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:41,392 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:04:41,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:04:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:04:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:04:41,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:41,394 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:41,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:04:41,394 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash -803250157, now seen corresponding path program 2 times [2020-10-27 14:04:41,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:41,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884595329] [2020-10-27 14:04:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:04:46,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:46,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:04:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:04:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:04:46,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:04:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:04:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:04:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:47,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 14:04:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:04:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 169 proven. 1247 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:04:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884595329] [2020-10-27 14:04:47,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:47,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:04:47,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112843659] [2020-10-27 14:04:47,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:04:47,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:47,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:04:47,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:04:47,057 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:04:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:47,646 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:04:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:04:47,647 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:04:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:47,648 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:04:47,648 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:04:47,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:04:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:04:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:04:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:04:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:04:47,661 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 116 [2020-10-27 14:04:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:47,661 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:04:47,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:04:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:04:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:04:47,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:47,663 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:47,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:04:47,663 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash 691225327, now seen corresponding path program 3 times [2020-10-27 14:04:47,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:47,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260806582] [2020-10-27 14:04:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:52,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:52,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:52,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 14:04:52,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:04:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 14:04:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:04:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 14:04:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:04:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 196 proven. 1445 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:04:53,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260806582] [2020-10-27 14:04:53,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:53,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:04:53,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508654647] [2020-10-27 14:04:53,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:04:53,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:04:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:04:53,434 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:04:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:54,140 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:04:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:04:54,141 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:04:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:54,142 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:04:54,142 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:04:54,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:04:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:04:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:04:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:04:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:04:54,161 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 124 [2020-10-27 14:04:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:54,162 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:04:54,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:04:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:04:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:04:54,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:54,164 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:54,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:04:54,164 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:54,164 INFO L82 PathProgramCache]: Analyzing trace with hash 699658443, now seen corresponding path program 4 times [2020-10-27 14:04:54,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:54,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095456317] [2020-10-27 14:04:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:04:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:04:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:04:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:04:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 225 proven. 1659 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:04:59,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095456317] [2020-10-27 14:04:59,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:59,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:04:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609267439] [2020-10-27 14:04:59,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:04:59,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:59,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:04:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:04:59,828 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:05:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:00,571 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:05:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:05:00,571 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-27 14:05:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:00,572 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:05:00,572 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:05:00,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:05:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:05:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:05:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:05:00,580 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 132 [2020-10-27 14:05:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:00,581 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:05:00,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:05:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:05:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:05:00,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:00,583 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:00,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:05:00,583 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash 606087591, now seen corresponding path program 5 times [2020-10-27 14:05:00,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:00,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120299092] [2020-10-27 14:05:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:05:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:05:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:05:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 256 proven. 1889 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:05:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120299092] [2020-10-27 14:05:06,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:05:06,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986220321] [2020-10-27 14:05:06,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:05:06,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:05:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:05:06,191 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:05:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:07,097 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:05:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:05:07,098 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 140 [2020-10-27 14:05:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:07,099 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:05:07,099 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:05:07,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:05:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:05:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:05:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:05:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:05:07,107 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 140 [2020-10-27 14:05:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:07,108 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:05:07,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:05:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:05:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:05:07,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:07,110 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:07,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:05:07,110 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2003217795, now seen corresponding path program 6 times [2020-10-27 14:05:07,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:07,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730977193] [2020-10-27 14:05:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:05:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:12,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 14:05:12,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:12,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:05:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:05:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 289 proven. 2135 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:05:12,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730977193] [2020-10-27 14:05:12,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:12,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:05:12,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822096929] [2020-10-27 14:05:12,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:05:12,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:12,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:05:12,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:05:12,825 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:05:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:13,814 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:05:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:05:13,815 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-27 14:05:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:13,816 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:05:13,816 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:05:13,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=605, Invalid=1465, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:05:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:05:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:05:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:05:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:05:13,825 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 148 [2020-10-27 14:05:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:13,825 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:05:13,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:05:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:05:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 14:05:13,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:13,827 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:13,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:05:13,827 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2061909087, now seen corresponding path program 7 times [2020-10-27 14:05:13,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:13,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617052472] [2020-10-27 14:05:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:18,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:05:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:18,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:05:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 14:05:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:05:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:05:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 324 proven. 2397 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:05:19,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617052472] [2020-10-27 14:05:19,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:19,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:05:19,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963817344] [2020-10-27 14:05:19,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:05:19,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:19,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:05:19,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:05:19,739 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:05:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:20,796 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:05:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:05:20,796 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 156 [2020-10-27 14:05:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:20,797 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:05:20,798 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:05:20,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=674, Invalid=1678, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:05:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:05:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:05:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:05:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:05:20,806 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 156 [2020-10-27 14:05:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:20,806 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:05:20,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:05:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:05:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:05:20,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:20,808 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:20,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:05:20,809 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1785566779, now seen corresponding path program 8 times [2020-10-27 14:05:20,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:20,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307826380] [2020-10-27 14:05:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:25,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:25,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:05:25,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:05:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:26,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 14:05:26,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:05:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:26,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:05:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:05:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:05:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3442 backedges. 361 proven. 2675 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:05:26,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307826380] [2020-10-27 14:05:26,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:26,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:05:26,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660810085] [2020-10-27 14:05:26,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:05:26,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:26,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:05:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:05:26,766 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:05:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:27,873 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:05:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:05:27,874 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 164 [2020-10-27 14:05:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:27,875 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:05:27,875 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:05:27,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:05:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:05:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:05:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:05:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:05:27,893 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 164 [2020-10-27 14:05:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:27,893 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:05:27,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:05:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:05:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:05:27,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:27,896 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:27,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:05:27,901 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1379629847, now seen corresponding path program 9 times [2020-10-27 14:05:27,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:27,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256587328] [2020-10-27 14:05:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:32,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:05:32,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:05:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 14:05:33,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:05:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:33,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:33,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:05:33,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:33,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:33,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:33,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:33,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:05:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 400 proven. 2969 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:05:33,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256587328] [2020-10-27 14:05:33,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:33,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:05:33,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802737023] [2020-10-27 14:05:33,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:05:33,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:05:33,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:05:33,831 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:05:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:35,063 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:05:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:05:35,063 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-27 14:05:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:35,064 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:05:35,064 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:05:35,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=824, Invalid=2146, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:05:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:05:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:05:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:05:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:05:35,073 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 172 [2020-10-27 14:05:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:05:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:05:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:05:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 14:05:35,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:35,075 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:35,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:05:35,075 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash -83973389, now seen corresponding path program 10 times [2020-10-27 14:05:35,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:35,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208795465] [2020-10-27 14:05:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:40,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:05:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:05:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:05:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:40,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:05:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:05:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:41,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 441 proven. 3279 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:05:41,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208795465] [2020-10-27 14:05:41,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:41,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:05:41,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365517459] [2020-10-27 14:05:41,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:05:41,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:05:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:41,093 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:05:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:42,341 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:05:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:05:42,342 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 180 [2020-10-27 14:05:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:42,343 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:05:42,343 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:05:42,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:05:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:05:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:05:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:05:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:05:42,351 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 180 [2020-10-27 14:05:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:42,351 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:05:42,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:05:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:05:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:05:42,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:42,352 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:42,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:05:42,353 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:42,353 INFO L82 PathProgramCache]: Analyzing trace with hash -707402289, now seen corresponding path program 11 times [2020-10-27 14:05:42,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:42,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043006600] [2020-10-27 14:05:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:05:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:05:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:05:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:05:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:05:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:48,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 484 proven. 3605 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:05:48,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043006600] [2020-10-27 14:05:48,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:48,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:05:48,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584341396] [2020-10-27 14:05:48,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:05:48,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:05:48,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:05:48,512 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:05:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:49,943 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:05:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:05:49,944 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 188 [2020-10-27 14:05:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:49,945 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:05:49,945 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:05:49,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=990, Invalid=2670, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:05:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:05:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:05:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:05:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:05:49,954 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 188 [2020-10-27 14:05:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:49,955 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:05:49,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:05:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:05:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:05:49,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:49,956 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:49,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:05:49,957 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash -397415509, now seen corresponding path program 12 times [2020-10-27 14:05:49,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:49,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657986617] [2020-10-27 14:05:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:05:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:05:54,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:05:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 14:05:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:05:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:56,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:56,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:56,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:05:56,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:05:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 529 proven. 3947 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:05:56,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657986617] [2020-10-27 14:05:56,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:56,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:05:56,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359102745] [2020-10-27 14:05:56,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:05:56,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:56,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:05:56,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:56,181 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:05:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:57,588 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:05:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:05:57,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 196 [2020-10-27 14:05:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:57,590 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:05:57,590 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:05:57,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1079, Invalid=2953, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:05:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:05:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:05:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:05:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:05:57,599 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 196 [2020-10-27 14:05:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:57,600 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:05:57,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:05:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:05:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:05:57,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:57,601 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:57,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:05:57,602 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:57,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1200915321, now seen corresponding path program 13 times [2020-10-27 14:05:57,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:57,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27307725] [2020-10-27 14:05:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:06:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:06:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:06:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:06:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:03,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 14:06:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:06:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 576 proven. 4305 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:06:03,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27307725] [2020-10-27 14:06:03,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:03,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:06:03,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022772466] [2020-10-27 14:06:03,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:06:03,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:03,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:06:03,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1250, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:06:03,900 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:06:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:05,573 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:06:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:06:05,574 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 204 [2020-10-27 14:06:05,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:05,575 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:06:05,575 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:06:05,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1172, Invalid=3250, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:06:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:06:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:06:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:06:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:06:05,585 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 204 [2020-10-27 14:06:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:05,585 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:06:05,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:06:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:06:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 14:06:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:05,587 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:05,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:06:05,588 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:05,588 INFO L82 PathProgramCache]: Analyzing trace with hash 949442659, now seen corresponding path program 14 times [2020-10-27 14:06:05,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:05,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563816591] [2020-10-27 14:06:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 14:06:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:06:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:06:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:06:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:06:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:06:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:06:11,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:06:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 625 proven. 4679 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:06:11,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563816591] [2020-10-27 14:06:11,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:11,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:06:11,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897297298] [2020-10-27 14:06:11,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:06:11,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:06:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:06:11,890 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:06:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:13,657 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:06:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:06:13,658 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-10-27 14:06:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:13,659 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:06:13,659 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:06:13,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1269, Invalid=3561, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:06:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:06:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:06:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:06:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:06:13,669 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 212 [2020-10-27 14:06:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:13,669 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:06:13,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:06:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:06:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 14:06:13,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:13,671 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:13,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:06:13,671 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1280164033, now seen corresponding path program 15 times [2020-10-27 14:06:13,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:13,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376481761] [2020-10-27 14:06:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:06:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:06:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:06:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:06:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:06:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 676 proven. 5069 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:06:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376481761] [2020-10-27 14:06:20,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:20,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:06:20,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356241290] [2020-10-27 14:06:20,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:06:20,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:06:20,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:06:20,204 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:06:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:22,049 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:06:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:06:22,049 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 220 [2020-10-27 14:06:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:22,051 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:06:22,051 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:06:22,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1370, Invalid=3886, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:06:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:06:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:06:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:06:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:06:22,059 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 220 [2020-10-27 14:06:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:22,060 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:06:22,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:06:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:06:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 14:06:22,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:22,061 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:22,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:06:22,061 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1190465253, now seen corresponding path program 16 times [2020-10-27 14:06:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:22,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881473827] [2020-10-27 14:06:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:06:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:06:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:06:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 14:06:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:06:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:06:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 14:06:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:06:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6994 backedges. 729 proven. 5475 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:06:28,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881473827] [2020-10-27 14:06:28,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:28,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:06:28,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091999923] [2020-10-27 14:06:28,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:06:28,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:28,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:06:28,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:06:28,663 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:06:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:30,515 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:06:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:06:30,515 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2020-10-27 14:06:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:30,517 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:06:30,517 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:06:30,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1475, Invalid=4225, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 14:06:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:06:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:06:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:06:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:06:30,528 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 228 [2020-10-27 14:06:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:30,528 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:06:30,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:06:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:06:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 14:06:30,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:30,530 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:30,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:06:30,530 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash 140520951, now seen corresponding path program 17 times [2020-10-27 14:06:30,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:30,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854740528] [2020-10-27 14:06:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:06:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:06:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 14:06:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:37,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:37,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 14:06:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:06:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 784 proven. 5897 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:06:37,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854740528] [2020-10-27 14:06:37,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:37,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:06:37,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875775494] [2020-10-27 14:06:37,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:06:37,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:37,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:06:37,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:06:37,194 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:06:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:39,274 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:06:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:06:39,274 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 236 [2020-10-27 14:06:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:39,276 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:06:39,276 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:06:39,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1584, Invalid=4578, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 14:06:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:06:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:06:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:06:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:06:39,284 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 236 [2020-10-27 14:06:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:39,284 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:06:39,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:06:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:06:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 14:06:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:39,285 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:39,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:06:39,285 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2111878611, now seen corresponding path program 18 times [2020-10-27 14:06:39,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:39,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106361491] [2020-10-27 14:06:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:39,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:44,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 14:06:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:06:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:44,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:06:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:45,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:06:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:06:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8082 backedges. 841 proven. 6335 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 14:06:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106361491] [2020-10-27 14:06:46,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:46,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:06:46,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49503843] [2020-10-27 14:06:46,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:06:46,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:06:46,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=1945, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:06:46,137 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:06:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:48,336 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:06:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:06:48,337 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 244 [2020-10-27 14:06:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:48,338 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:06:48,338 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:06:48,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1697, Invalid=4945, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:06:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:06:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:06:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:06:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:06:48,347 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 244 [2020-10-27 14:06:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:48,348 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:06:48,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:06:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:06:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:06:48,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:48,350 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:06:48,350 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash -30717777, now seen corresponding path program 19 times [2020-10-27 14:06:48,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:48,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77200310] [2020-10-27 14:06:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 14:06:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:06:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:53,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:06:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:06:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:55,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:06:55,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 14:06:55,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:06:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:06:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 14:06:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8656 backedges. 900 proven. 6789 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-27 14:06:55,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77200310] [2020-10-27 14:06:55,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:55,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:06:55,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053160077] [2020-10-27 14:06:55,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:06:55,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:06:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:06:55,224 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-27 14:06:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:57,525 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-27 14:06:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:06:57,525 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 252 [2020-10-27 14:06:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:57,528 INFO L225 Difference]: With dead ends: 245 [2020-10-27 14:06:57,529 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:06:57,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1814, Invalid=5326, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:06:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:06:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:06:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:06:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-27 14:06:57,543 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 252 [2020-10-27 14:06:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:57,544 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-27 14:06:57,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:06:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-27 14:06:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 14:06:57,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:57,545 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:57,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:06:57,546 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1649321611, now seen corresponding path program 20 times [2020-10-27 14:06:57,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890070553] [2020-10-27 14:06:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 14:07:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:07:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:07:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 14:07:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:07:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:02,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:07:02,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:03,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:03,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 14:07:03,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:07:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:07:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:07:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:07:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 14:07:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 14:07:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:07:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9250 backedges. 961 proven. 7259 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2020-10-27 14:07:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890070553] [2020-10-27 14:07:04,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:04,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-27 14:07:04,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981942157] [2020-10-27 14:07:04,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-27 14:07:04,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:04,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-27 14:07:04,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:07:04,525 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand 56 states. [2020-10-27 14:07:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:07,007 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2020-10-27 14:07:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-27 14:07:07,008 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 260 [2020-10-27 14:07:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:07,010 INFO L225 Difference]: With dead ends: 253 [2020-10-27 14:07:07,010 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 14:07:07,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1935, Invalid=5721, Unknown=0, NotChecked=0, Total=7656 [2020-10-27 14:07:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 14:07:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-27 14:07:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 14:07:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2020-10-27 14:07:07,020 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 260 [2020-10-27 14:07:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:07,020 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2020-10-27 14:07:07,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-27 14:07:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2020-10-27 14:07:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-27 14:07:07,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:07,022 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:07,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:07:07,022 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:07,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1674153831, now seen corresponding path program 21 times [2020-10-27 14:07:07,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:07,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781392768] [2020-10-27 14:07:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:07,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:07:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:12,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:07:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:07:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:07:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-27 14:07:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:14,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:14,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:07:14,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9864 backedges. 1024 proven. 7745 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2020-10-27 14:07:14,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781392768] [2020-10-27 14:07:14,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:14,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-27 14:07:14,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751671150] [2020-10-27 14:07:14,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-27 14:07:14,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:14,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-27 14:07:14,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=2434, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:07:14,172 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 58 states.