/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/zero_sum_const_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:11:04,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:11:04,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:11:04,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:11:04,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:11:04,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:11:04,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:11:04,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:11:04,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:11:04,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:11:04,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:11:04,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:11:04,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:11:04,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:11:04,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:11:04,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:11:04,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:11:04,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:11:04,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:11:04,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:11:04,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:11:04,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:11:04,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:11:04,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:11:04,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:11:04,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:11:04,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:11:04,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:11:04,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:11:04,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:11:04,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:11:04,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:11:04,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:11:04,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:11:04,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:11:04,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:11:04,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:11:04,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:11:04,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:11:04,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:11:04,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:11:04,334 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 14:11:04,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:11:04,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:11:04,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:11:04,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:11:04,404 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:11:04,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:11:04,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:11:04,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:11:04,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:11:04,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:11:04,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:11:04,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:11:04,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:11:04,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:11:04,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:11:04,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:11:04,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:11:04,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:11:04,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:11:04,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:11:04,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:11:04,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:11:04,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:11:04,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:11:04,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:11:04,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:11:04,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:11:04,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:11:04,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:11:04,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:11:04,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:11:04,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:11:04,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:11:04,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:11:04,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:11:04,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2020-10-27 14:11:04,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152d8084b/70adf309ad2b47339971e9e8c35fb91c/FLAG0daca17ba [2020-10-27 14:11:05,653 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:11:05,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2020-10-27 14:11:05,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152d8084b/70adf309ad2b47339971e9e8c35fb91c/FLAG0daca17ba [2020-10-27 14:11:06,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152d8084b/70adf309ad2b47339971e9e8c35fb91c [2020-10-27 14:11:06,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:11:06,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:11:06,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:06,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:11:06,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:11:06,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125a752d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06, skipping insertion in model container [2020-10-27 14:11:06,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:11:06,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:11:06,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:06,358 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:11:06,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:06,401 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:11:06,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06 WrapperNode [2020-10-27 14:11:06,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:06,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:11:06,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:11:06,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:11:06,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (1/1) ... [2020-10-27 14:11:06,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:11:06,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:11:06,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:11:06,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:11:06,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (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 14:11:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:11:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:11:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:11:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:11:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:11:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:11:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:11:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:11:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:11:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:11:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:11:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:11:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 14:11:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:11:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:11:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:11:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:11:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:11:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:11:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:11:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:11:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:11:07,179 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:11:07,180 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-27 14:11:07,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:07 BoogieIcfgContainer [2020-10-27 14:11:07,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:11:07,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:11:07,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:11:07,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:11:07,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:11:06" (1/3) ... [2020-10-27 14:11:07,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746076f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:07, skipping insertion in model container [2020-10-27 14:11:07,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:06" (2/3) ... [2020-10-27 14:11:07,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746076f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:07, skipping insertion in model container [2020-10-27 14:11:07,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:07" (3/3) ... [2020-10-27 14:11:07,201 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m3.c [2020-10-27 14:11:07,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:11:07,223 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:11:07,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:11:07,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:11:07,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:11:07,285 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:11:07,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:11:07,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:11:07,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:11:07,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:11:07,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:11:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 14:11:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:11:07,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:07,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:07,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:07,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -645642689, now seen corresponding path program 1 times [2020-10-27 14:11:07,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:07,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130323833] [2020-10-27 14:11:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:11:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:11:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2223 [2020-10-27 14:11:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:11:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:11:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:11:09,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:09,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:09,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130323833] [2020-10-27 14:11:09,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:09,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:11:09,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940631579] [2020-10-27 14:11:09,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:11:09,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:10,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:11:10,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:11:10,025 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-10-27 14:11:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:10,276 INFO L93 Difference]: Finished difference Result 74 states and 103 transitions. [2020-10-27 14:11:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:11:10,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-27 14:11:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:10,292 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:11:10,292 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:11:10,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:11:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:11:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 14:11:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:11:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 14:11:10,354 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2020-10-27 14:11:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:10,355 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 14:11:10,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:11:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 14:11:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:11:10,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:10,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:10,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:11:10,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2107985391, now seen corresponding path program 1 times [2020-10-27 14:11:10,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:10,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338802434] [2020-10-27 14:11:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:15,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:11:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:11:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:11:15,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:11:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:11:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:11:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:15,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338802434] [2020-10-27 14:11:15,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:15,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:11:15,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549138905] [2020-10-27 14:11:15,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:11:15,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:11:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:11:15,478 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2020-10-27 14:11:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:15,618 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-27 14:11:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:11:15,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 14:11:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:15,620 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:11:15,620 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 14:11:15,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:11:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 14:11:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-27 14:11:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:11:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-27 14:11:15,632 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 25 [2020-10-27 14:11:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:15,633 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-27 14:11:15,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:11:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-27 14:11:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:11:15,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:15,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:15,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:11:15,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash -640041645, now seen corresponding path program 1 times [2020-10-27 14:11:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:15,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547073953] [2020-10-27 14:11:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:20,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:20,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 14:11:20,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:11:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:11:20,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:11:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:11:20,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:20,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:20,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:11:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:20,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547073953] [2020-10-27 14:11:20,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:20,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:11:20,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024010838] [2020-10-27 14:11:20,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:11:20,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:20,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:11:20,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:11:20,735 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2020-10-27 14:11:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:20,903 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2020-10-27 14:11:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:11:20,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-27 14:11:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:20,905 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:11:20,905 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:11:20,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:11:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-27 14:11:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:11:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-27 14:11:20,914 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 27 [2020-10-27 14:11:20,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:20,915 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-27 14:11:20,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:11:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-27 14:11:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:11:20,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:20,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:20,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:11:20,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:20,917 INFO L82 PathProgramCache]: Analyzing trace with hash -265634913, now seen corresponding path program 1 times [2020-10-27 14:11:20,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:20,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877709331] [2020-10-27 14:11:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:11:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:11:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:11:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:11:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:11:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:11:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:26,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:26,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:26,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:11:26,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877709331] [2020-10-27 14:11:26,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:26,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:11:26,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912258626] [2020-10-27 14:11:26,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:11:26,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:26,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:11:26,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:26,041 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2020-10-27 14:11:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:26,294 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-10-27 14:11:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:11:26,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-27 14:11:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:26,296 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:11:26,296 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:11:26,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:11:26,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:11:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 14:11:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:11:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-27 14:11:26,306 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 39 [2020-10-27 14:11:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:26,307 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-27 14:11:26,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:11:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-27 14:11:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:11:26,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:26,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:26,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:11:26,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:26,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2136437933, now seen corresponding path program 2 times [2020-10-27 14:11:26,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:26,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571292951] [2020-10-27 14:11:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:31,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:11:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:11:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:11:31,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:11:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:33,123 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-10-27 14:11:33,299 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-10-27 14:11:33,464 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-27 14:11:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:34,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:34,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:11:34,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:34,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571292951] [2020-10-27 14:11:34,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:34,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:11:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157936412] [2020-10-27 14:11:34,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:11:34,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:34,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:11:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:11:34,561 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 33 states. [2020-10-27 14:11:35,325 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-27 14:11:35,671 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-27 14:11:35,952 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-27 14:11:36,396 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-27 14:11:36,653 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-27 14:11:36,856 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-27 14:11:37,252 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-27 14:11:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:39,083 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2020-10-27 14:11:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:11:39,088 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 53 [2020-10-27 14:11:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:39,091 INFO L225 Difference]: With dead ends: 123 [2020-10-27 14:11:39,091 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:11:39,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=339, Invalid=2967, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:11:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:11:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 89. [2020-10-27 14:11:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:11:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-10-27 14:11:39,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 53 [2020-10-27 14:11:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:39,112 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-10-27 14:11:39,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:11:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-10-27 14:11:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:11:39,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:39,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:39,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:11:39,115 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1961610833, now seen corresponding path program 3 times [2020-10-27 14:11:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:39,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893901938] [2020-10-27 14:11:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:44,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:11:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:11:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:11:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:11:44,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:11:44,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893901938] [2020-10-27 14:11:44,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:44,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:11:44,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267389959] [2020-10-27 14:11:44,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:11:44,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:11:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:44,256 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 10 states. [2020-10-27 14:11:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:44,936 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-10-27 14:11:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:11:44,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-27 14:11:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:44,940 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:11:44,940 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 14:11:44,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:11:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 14:11:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2020-10-27 14:11:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 14:11:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-10-27 14:11:44,965 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 55 [2020-10-27 14:11:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:44,965 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-10-27 14:11:44,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:11:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-10-27 14:11:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:11:44,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:44,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:44,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:11:44,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1470900847, now seen corresponding path program 4 times [2020-10-27 14:11:44,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:44,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824447254] [2020-10-27 14:11:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:11:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:11:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:11:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:50,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:50,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:11:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824447254] [2020-10-27 14:11:50,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:50,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:11:50,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778063055] [2020-10-27 14:11:50,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:11:50,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:11:50,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:50,138 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 10 states. [2020-10-27 14:11:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:50,590 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2020-10-27 14:11:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:11:50,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-27 14:11:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:50,593 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:11:50,593 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 14:11:50,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:11:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 14:11:50,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-10-27 14:11:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:11:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-27 14:11:50,608 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 55 [2020-10-27 14:11:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:50,608 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-27 14:11:50,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:11:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-27 14:11:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:11:50,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:50,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-27 14:11:50,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:11:50,610 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 220708155, now seen corresponding path program 5 times [2020-10-27 14:11:50,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:50,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961866047] [2020-10-27 14:11:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:55,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:11:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:11:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:11:55,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:11:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:11:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:57,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 14:11:58,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961866047] [2020-10-27 14:11:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:11:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443145454] [2020-10-27 14:11:58,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:11:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:11:58,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:11:58,023 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 40 states. [2020-10-27 14:11:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:59,923 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-27 14:11:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:11:59,923 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 67 [2020-10-27 14:11:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:59,925 INFO L225 Difference]: With dead ends: 118 [2020-10-27 14:11:59,925 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:11:59,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:11:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:11:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2020-10-27 14:11:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 14:11:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-27 14:11:59,948 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 67 [2020-10-27 14:11:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:59,948 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-27 14:11:59,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:11:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-27 14:11:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:11:59,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:59,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-27 14:11:59,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:11:59,952 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1660752195, now seen corresponding path program 6 times [2020-10-27 14:11:59,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:59,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334983510] [2020-10-27 14:11:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:59,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:12:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:05,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:05,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:05,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:12:05,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334983510] [2020-10-27 14:12:05,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:05,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:12:05,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913059101] [2020-10-27 14:12:05,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:12:05,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:12:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:12:05,119 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 12 states. [2020-10-27 14:12:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:05,970 INFO L93 Difference]: Finished difference Result 205 states and 231 transitions. [2020-10-27 14:12:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:12:05,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-27 14:12:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:05,973 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:12:05,973 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:12:05,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:12:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:12:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 115. [2020-10-27 14:12:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:12:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-27 14:12:05,994 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 69 [2020-10-27 14:12:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:05,995 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-27 14:12:05,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:12:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-27 14:12:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:12:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:05,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-27 14:12:05,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:12:05,997 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1299413123, now seen corresponding path program 7 times [2020-10-27 14:12:05,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:05,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268526082] [2020-10-27 14:12:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:12:11,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:11,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:12:11,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:12:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:12:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:12:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:11,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:11,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:12:11,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268526082] [2020-10-27 14:12:11,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:11,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:12:11,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250371576] [2020-10-27 14:12:11,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:12:11,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:12:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:12:11,173 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 12 states. [2020-10-27 14:12:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:11,716 INFO L93 Difference]: Finished difference Result 195 states and 212 transitions. [2020-10-27 14:12:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:12:11,717 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-27 14:12:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:11,719 INFO L225 Difference]: With dead ends: 195 [2020-10-27 14:12:11,719 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 14:12:11,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:12:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 14:12:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-10-27 14:12:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:12:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-10-27 14:12:11,753 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 69 [2020-10-27 14:12:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:11,753 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-10-27 14:12:11,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:12:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-10-27 14:12:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:12:11,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:11,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 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 14:12:11,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:12:11,755 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1386580663, now seen corresponding path program 8 times [2020-10-27 14:12:11,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:11,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454812379] [2020-10-27 14:12:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 14:12:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:18,807 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-27 14:12:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:23,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:12:24,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454812379] [2020-10-27 14:12:24,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:24,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-27 14:12:24,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555360507] [2020-10-27 14:12:24,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-27 14:12:24,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-27 14:12:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3030, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:12:24,007 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 58 states. [2020-10-27 14:12:24,396 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-10-27 14:12:24,978 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-27 14:12:25,213 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-27 14:12:25,413 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-27 14:12:26,233 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-10-27 14:12:26,857 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-27 14:12:27,118 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-10-27 14:12:27,552 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 40 [2020-10-27 14:12:27,925 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 46 [2020-10-27 14:12:29,602 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2020-10-27 14:12:30,097 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2020-10-27 14:12:30,707 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 55 [2020-10-27 14:12:32,229 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-27 14:12:32,654 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-27 14:12:32,980 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-27 14:12:33,203 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-27 14:12:34,157 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-27 14:12:34,449 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-27 14:12:34,717 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-10-27 14:12:35,059 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2020-10-27 14:12:35,407 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2020-10-27 14:12:35,941 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2020-10-27 14:12:36,757 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-27 14:12:37,075 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-27 14:12:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:38,190 INFO L93 Difference]: Finished difference Result 201 states and 218 transitions. [2020-10-27 14:12:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-27 14:12:38,191 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 81 [2020-10-27 14:12:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:38,193 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:12:38,193 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:12:38,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=973, Invalid=9739, Unknown=0, NotChecked=0, Total=10712 [2020-10-27 14:12:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:12:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 137. [2020-10-27 14:12:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 14:12:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-27 14:12:38,217 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 81 [2020-10-27 14:12:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:38,218 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-27 14:12:38,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-27 14:12:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-27 14:12:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:12:38,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:38,220 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 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 14:12:38,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:12:38,220 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash 284259339, now seen corresponding path program 9 times [2020-10-27 14:12:38,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:38,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004587586] [2020-10-27 14:12:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:12:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:12:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:12:43,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:12:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:12:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:12:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:43,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:43,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:43,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:43,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 14:12:43,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004587586] [2020-10-27 14:12:43,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:43,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:12:43,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803506892] [2020-10-27 14:12:43,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:12:43,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:43,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:12:43,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:43,454 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 14 states. [2020-10-27 14:12:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:44,394 INFO L93 Difference]: Finished difference Result 282 states and 308 transitions. [2020-10-27 14:12:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:12:44,395 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-27 14:12:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:44,397 INFO L225 Difference]: With dead ends: 282 [2020-10-27 14:12:44,397 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:12:44,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:12:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:12:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2020-10-27 14:12:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:12:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2020-10-27 14:12:44,419 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 83 [2020-10-27 14:12:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:44,420 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2020-10-27 14:12:44,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:12:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2020-10-27 14:12:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:12:44,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:44,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 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 14:12:44,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:12:44,423 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:44,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2006527349, now seen corresponding path program 10 times [2020-10-27 14:12:44,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:44,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999153494] [2020-10-27 14:12:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:49,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:49,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:12:49,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:12:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:12:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:12:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:12:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:49,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:49,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 14:12:49,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999153494] [2020-10-27 14:12:49,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:49,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:12:49,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432584063] [2020-10-27 14:12:49,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:12:49,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:12:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:49,649 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 14 states. [2020-10-27 14:12:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:50,492 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2020-10-27 14:12:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:12:50,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-27 14:12:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:50,494 INFO L225 Difference]: With dead ends: 152 [2020-10-27 14:12:50,494 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:12:50,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:12:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:12:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 14:12:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:12:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-10-27 14:12:50,506 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 83 [2020-10-27 14:12:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:50,506 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-10-27 14:12:50,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:12:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-10-27 14:12:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:12:50,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:50,507 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 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 14:12:50,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:12:50,507 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -131695401, now seen corresponding path program 11 times [2020-10-27 14:12:50,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459498023] [2020-10-27 14:12:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-27 14:12:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:12:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:58,300 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-27 14:12:58,524 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 14:12:58,742 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-27 14:12:58,981 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-27 14:12:59,206 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-27 14:12:59,430 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-27 14:12:59,679 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-27 14:12:59,913 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-27 14:13:00,147 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-27 14:13:00,369 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-27 14:13:00,603 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-27 14:13:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:06,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:06,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:06,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 12 proven. 138 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 14:13:07,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459498023] [2020-10-27 14:13:07,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:07,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-27 14:13:07,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152916227] [2020-10-27 14:13:07,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-27 14:13:07,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:07,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-27 14:13:07,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4295, Unknown=0, NotChecked=0, Total=4556 [2020-10-27 14:13:07,076 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 68 states. [2020-10-27 14:13:07,436 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 3 [2020-10-27 14:13:07,973 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 39 [2020-10-27 14:13:08,425 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 14:13:08,671 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 14:13:10,651 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2020-10-27 14:13:11,470 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2020-10-27 14:13:11,873 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2020-10-27 14:13:12,355 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 74 [2020-10-27 14:13:12,745 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 14:13:13,213 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 74 [2020-10-27 14:13:13,763 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 85 [2020-10-27 14:13:14,513 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 72 [2020-10-27 14:13:14,870 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 40 [2020-10-27 14:13:15,629 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2020-10-27 14:13:15,958 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 46 [2020-10-27 14:13:16,708 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2020-10-27 14:13:17,592 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2020-10-27 14:13:18,446 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-27 14:13:19,068 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-27 14:13:19,876 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2020-10-27 14:13:20,228 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-27 14:13:20,870 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2020-10-27 14:13:22,060 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2020-10-27 14:13:22,717 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2020-10-27 14:13:22,975 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-27 14:13:23,356 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2020-10-27 14:13:23,596 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-27 14:13:24,109 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-27 14:13:24,432 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-27 14:13:25,121 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-10-27 14:13:25,537 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 14:13:25,864 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-27 14:13:27,132 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-27 14:13:27,728 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 14:13:29,268 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-27 14:13:29,752 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-27 14:13:30,781 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2020-10-27 14:13:31,467 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-27 14:13:31,794 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-10-27 14:13:33,137 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-27 14:13:33,707 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-27 14:13:34,235 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 14:13:34,691 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-27 14:13:35,487 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-27 14:13:36,755 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-10-27 14:13:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:38,070 INFO L93 Difference]: Finished difference Result 206 states and 223 transitions. [2020-10-27 14:13:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-27 14:13:38,072 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 95 [2020-10-27 14:13:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:38,075 INFO L225 Difference]: With dead ends: 206 [2020-10-27 14:13:38,076 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 14:13:38,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4608 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=1590, Invalid=21060, Unknown=0, NotChecked=0, Total=22650 [2020-10-27 14:13:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 14:13:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 137. [2020-10-27 14:13:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 14:13:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-27 14:13:38,104 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 95 [2020-10-27 14:13:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:38,104 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-27 14:13:38,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-27 14:13:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-27 14:13:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:13:38,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:38,105 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 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 14:13:38,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:13:38,106 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:38,106 INFO L82 PathProgramCache]: Analyzing trace with hash 314898265, now seen corresponding path program 12 times [2020-10-27 14:13:38,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:38,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114283390] [2020-10-27 14:13:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:38,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:13:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-27 14:13:43,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114283390] [2020-10-27 14:13:43,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:43,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:13:43,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830783950] [2020-10-27 14:13:43,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:13:43,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:13:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:13:43,403 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 16 states. [2020-10-27 14:13:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:45,375 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2020-10-27 14:13:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:13:45,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-27 14:13:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:45,379 INFO L225 Difference]: With dead ends: 265 [2020-10-27 14:13:45,379 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 14:13:45,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:13:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 14:13:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 147. [2020-10-27 14:13:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:13:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-10-27 14:13:45,403 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 97 [2020-10-27 14:13:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:45,404 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-10-27 14:13:45,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:13:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-10-27 14:13:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 14:13:45,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:45,405 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 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 14:13:45,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:13:45,405 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1310211429, now seen corresponding path program 13 times [2020-10-27 14:13:45,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:45,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860765690] [2020-10-27 14:13:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:13:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:13:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:50,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:50,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:13:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-27 14:13:50,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860765690] [2020-10-27 14:13:50,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:50,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:13:50,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963434934] [2020-10-27 14:13:50,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:13:50,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:13:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:13:50,846 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 16 states. [2020-10-27 14:13:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:52,255 INFO L93 Difference]: Finished difference Result 255 states and 271 transitions. [2020-10-27 14:13:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:13:52,257 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-10-27 14:13:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:52,258 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:13:52,259 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:13:52,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:13:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:13:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2020-10-27 14:13:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:13:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2020-10-27 14:13:52,278 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 99 [2020-10-27 14:13:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:52,279 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2020-10-27 14:13:52,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:13:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2020-10-27 14:13:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:13:52,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:52,280 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 14:13:52,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:13:52,280 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash -667241499, now seen corresponding path program 14 times [2020-10-27 14:13:52,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:52,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072755468] [2020-10-27 14:13:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:13:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:14,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:14:14,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072755468] [2020-10-27 14:14:14,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:14,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-27 14:14:14,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428170144] [2020-10-27 14:14:14,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-27 14:14:14,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-27 14:14:14,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=5393, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 14:14:14,418 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand 75 states. [2020-10-27 14:14:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:29,994 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-10-27 14:14:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-27 14:14:29,996 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 109 [2020-10-27 14:14:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:29,999 INFO L225 Difference]: With dead ends: 190 [2020-10-27 14:14:29,999 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 14:14:30,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=167, Invalid=5685, Unknown=0, NotChecked=0, Total=5852 [2020-10-27 14:14:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 14:14:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 171. [2020-10-27 14:14:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-27 14:14:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2020-10-27 14:14:30,030 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 109 [2020-10-27 14:14:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:30,030 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2020-10-27 14:14:30,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-27 14:14:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2020-10-27 14:14:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:14:30,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:30,031 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 14:14:30,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:14:30,031 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:30,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1626471705, now seen corresponding path program 15 times [2020-10-27 14:14:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:30,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594827797] [2020-10-27 14:14:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:14:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:14:35,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594827797] [2020-10-27 14:14:35,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:35,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:14:35,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821535051] [2020-10-27 14:14:35,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:14:35,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:35,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:14:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:14:35,533 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand 18 states. [2020-10-27 14:14:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:39,483 INFO L93 Difference]: Finished difference Result 331 states and 357 transitions. [2020-10-27 14:14:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:14:39,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 111 [2020-10-27 14:14:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:39,488 INFO L225 Difference]: With dead ends: 331 [2020-10-27 14:14:39,488 INFO L226 Difference]: Without dead ends: 208 [2020-10-27 14:14:39,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:14:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-27 14:14:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 181. [2020-10-27 14:14:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 14:14:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2020-10-27 14:14:39,524 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 111 [2020-10-27 14:14:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:39,524 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2020-10-27 14:14:39,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:14:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2020-10-27 14:14:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:14:39,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:39,526 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 14:14:39,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:14:39,526 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 79461287, now seen corresponding path program 16 times [2020-10-27 14:14:39,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:39,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021197193] [2020-10-27 14:14:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking...