/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=SHALLOWEST --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/reducercommutativity/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:13:33,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:13:33,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:13:33,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:13:33,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:13:33,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:13:33,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:13:33,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:13:33,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:13:33,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:13:33,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:13:33,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:13:33,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:13:33,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:13:33,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:13:33,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:13:33,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:13:33,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:13:33,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:13:33,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:13:33,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:13:33,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:13:33,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:13:33,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:13:33,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:13:33,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:13:33,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:13:33,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:13:33,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:13:33,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:13:33,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:13:33,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:13:33,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:13:33,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:13:33,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:13:33,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:13:33,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:13:33,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:13:33,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:13:33,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:13:33,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:13:33,334 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 04:13:33,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:13:33,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:13:33,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:13:33,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:13:33,387 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:13:33,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:13:33,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:13:33,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:13:33,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:13:33,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:13:33,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:13:33,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:13:33,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:13:33,390 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:13:33,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:13:33,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:13:33,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:13:33,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:13:33,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:13:33,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:13:33,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:13:33,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:13:33,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:13:33,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:13:33,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:13:33,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:13:33,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:13:33,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:13:33,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:13:33,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:13:33,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:13:33,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:13:33,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:13:33,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:13:33,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:13:33,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-27 04:13:33,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d/FLAGbe3090623 [2020-10-27 04:13:34,521 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:13:34,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-27 04:13:34,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d/FLAGbe3090623 [2020-10-27 04:13:34,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362db41e9/4f8836c43eba4e9bbf0315af62ed436d [2020-10-27 04:13:34,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:13:34,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:13:34,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:34,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:13:34,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:13:34,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:34" (1/1) ... [2020-10-27 04:13:34,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e9d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:34, skipping insertion in model container [2020-10-27 04:13:34,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:34" (1/1) ... [2020-10-27 04:13:34,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:13:34,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:13:35,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:35,164 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:13:35,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:35,231 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:13:35,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35 WrapperNode [2020-10-27 04:13:35,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:35,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:13:35,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:13:35,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:13:35,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (1/1) ... [2020-10-27 04:13:35,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:13:35,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:13:35,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:13:35,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:13:35,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (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 04:13:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:13:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:13:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:13:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 04:13:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:13:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:13:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:13:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 04:13:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:13:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:13:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:13:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:13:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:13:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:13:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:13:35,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:13:35,717 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:13:35,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:35 BoogieIcfgContainer [2020-10-27 04:13:35,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:13:35,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:13:35,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:13:35,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:13:35,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:13:34" (1/3) ... [2020-10-27 04:13:35,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdaa53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:35, skipping insertion in model container [2020-10-27 04:13:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:35" (2/3) ... [2020-10-27 04:13:35,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdaa53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:35, skipping insertion in model container [2020-10-27 04:13:35,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:35" (3/3) ... [2020-10-27 04:13:35,728 INFO L111 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-27 04:13:35,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:13:35,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:13:35,760 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:13:35,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:13:35,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:13:35,787 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:13:35,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:13:35,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:13:35,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:13:35,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:13:35,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:13:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 04:13:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:35,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:35,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:35,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 04:13:35,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:35,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359756529] [2020-10-27 04:13:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1454 [2020-10-27 04:13:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:13:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:13:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:13:37,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:37,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:37,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:13:37,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:37,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:37,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:37,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:37,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:37,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:13:37,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:37,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:37,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:13:37,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:37,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359756529] [2020-10-27 04:13:37,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:37,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:13:37,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848579876] [2020-10-27 04:13:37,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:13:37,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:13:37,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:37,624 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 04:13:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:37,720 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 04:13:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:13:37,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:13:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:37,731 INFO L225 Difference]: With dead ends: 62 [2020-10-27 04:13:37,731 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 04:13:37,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 04:13:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 04:13:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 04:13:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 04:13:37,778 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 04:13:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:37,779 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 04:13:37,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:13:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 04:13:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:37,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:37,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:37,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:13:37,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 04:13:37,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:37,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903830669] [2020-10-27 04:13:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:39,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1567 [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:39,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:39,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:13:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:39,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:13:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:39,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:39,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:13:39,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:39,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903830669] [2020-10-27 04:13:39,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:39,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:13:39,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846101914] [2020-10-27 04:13:39,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:13:39,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:39,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:13:39,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:13:39,470 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-27 04:13:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:39,664 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-10-27 04:13:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:13:39,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:13:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:39,666 INFO L225 Difference]: With dead ends: 55 [2020-10-27 04:13:39,666 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 04:13:39,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:13:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 04:13:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-27 04:13:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 04:13:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 04:13:39,689 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 04:13:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:39,690 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 04:13:39,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:13:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 04:13:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 04:13:39,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:39,694 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 04:13:39,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:13:39,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1088396992, now seen corresponding path program 1 times [2020-10-27 04:13:39,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:39,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705261344] [2020-10-27 04:13:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 04:13:44,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:13:44,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:13:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:13:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:44,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:13:44,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:13:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:44,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:13:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:13:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:44,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:13:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 04:13:44,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705261344] [2020-10-27 04:13:44,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:44,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:13:44,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918901769] [2020-10-27 04:13:44,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:13:44,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:44,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:13:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:13:44,893 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-10-27 04:13:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:45,076 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 04:13:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:13:45,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-27 04:13:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:45,078 INFO L225 Difference]: With dead ends: 61 [2020-10-27 04:13:45,078 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 04:13:45,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:13:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 04:13:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-27 04:13:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 04:13:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-27 04:13:45,088 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2020-10-27 04:13:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:45,088 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-27 04:13:45,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:13:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-27 04:13:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 04:13:45,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:45,090 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:45,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:13:45,090 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598475, now seen corresponding path program 2 times [2020-10-27 04:13:45,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:45,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943556361] [2020-10-27 04:13:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:13:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:13:50,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:13:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:13:50,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:13:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:50,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:13:50,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 04:13:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:50,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:13:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:13:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:50,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:13:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:13:50,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943556361] [2020-10-27 04:13:50,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:50,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:13:50,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868611766] [2020-10-27 04:13:50,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:13:50,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:13:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:13:50,500 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 9 states. [2020-10-27 04:13:50,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:50,774 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-27 04:13:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:13:50,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 04:13:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:50,776 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:13:50,776 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:13:50,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:13:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:13:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-27 04:13:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 04:13:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-27 04:13:50,786 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 56 [2020-10-27 04:13:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:50,786 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-27 04:13:50,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:13:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-27 04:13:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:13:50,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:50,788 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:50,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:13:50,788 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash 317614428, now seen corresponding path program 3 times [2020-10-27 04:13:50,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:50,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723549728] [2020-10-27 04:13:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:55,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:13:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:55,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:13:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:56,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:56,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:13:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 04:13:56,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723549728] [2020-10-27 04:13:56,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:56,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:13:56,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524673730] [2020-10-27 04:13:56,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:13:56,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:56,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:13:56,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:13:56,218 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states. [2020-10-27 04:13:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:56,507 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-27 04:13:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:13:56,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 04:13:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:56,508 INFO L225 Difference]: With dead ends: 77 [2020-10-27 04:13:56,509 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 04:13:56,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:13:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 04:13:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 04:13:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:13:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-27 04:13:56,524 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 67 [2020-10-27 04:13:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:56,525 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-27 04:13:56,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:13:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-27 04:13:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 04:13:56,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:56,529 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:56,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:13:56,529 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:56,531 INFO L82 PathProgramCache]: Analyzing trace with hash 58083673, now seen corresponding path program 4 times [2020-10-27 04:13:56,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:56,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685312224] [2020-10-27 04:13:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:14:01,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:14:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:01,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:01,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:01,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:14:01,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:01,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:14:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:01,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:01,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:14:01,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:14:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:14:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:02,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:02,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 04:14:02,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 148 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:14:02,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685312224] [2020-10-27 04:14:02,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:02,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:14:02,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068300455] [2020-10-27 04:14:02,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:14:02,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:14:02,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:14:02,067 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 13 states. [2020-10-27 04:14:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:02,394 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2020-10-27 04:14:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:14:02,394 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2020-10-27 04:14:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:02,396 INFO L225 Difference]: With dead ends: 85 [2020-10-27 04:14:02,396 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 04:14:02,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:14:02,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 04:14:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-27 04:14:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 04:14:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-27 04:14:02,404 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 78 [2020-10-27 04:14:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:02,405 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-27 04:14:02,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:14:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-27 04:14:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:14:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:02,407 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:02,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:14:02,407 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash -34804360, now seen corresponding path program 5 times [2020-10-27 04:14:02,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:02,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225847616] [2020-10-27 04:14:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:14:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:14:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:14:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 04:14:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:07,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:14:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:14:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 105 proven. 235 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 04:14:08,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225847616] [2020-10-27 04:14:08,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:08,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:14:08,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646905413] [2020-10-27 04:14:08,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:14:08,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:08,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:14:08,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:08,039 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 15 states. [2020-10-27 04:14:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:08,449 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2020-10-27 04:14:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:14:08,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-27 04:14:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:08,452 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:14:08,452 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 04:14:08,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 04:14:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 04:14:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 04:14:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-27 04:14:08,462 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 89 [2020-10-27 04:14:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:08,463 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-27 04:14:08,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:14:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-27 04:14:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:14:08,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:08,465 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:08,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:14:08,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1929013309, now seen corresponding path program 6 times [2020-10-27 04:14:08,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:08,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948283552] [2020-10-27 04:14:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:13,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:13,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:14:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:13,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:14:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:14,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:14,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:14:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:14,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 153 proven. 342 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:14:14,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948283552] [2020-10-27 04:14:14,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:14,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:14:14,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41025598] [2020-10-27 04:14:14,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:14:14,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:14:14,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:14:14,208 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 17 states. [2020-10-27 04:14:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:14,813 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-27 04:14:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:14:14,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-27 04:14:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:14,814 INFO L225 Difference]: With dead ends: 101 [2020-10-27 04:14:14,814 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:14:14,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:14:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:14:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 04:14:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 04:14:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-27 04:14:14,836 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 100 [2020-10-27 04:14:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:14,836 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-27 04:14:14,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:14:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-27 04:14:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 04:14:14,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:14,841 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:14,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:14:14,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash 506637716, now seen corresponding path program 7 times [2020-10-27 04:14:14,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:14,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555540767] [2020-10-27 04:14:14,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:14:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:14:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:20,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:20,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 04:14:20,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:14:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:20,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:14:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:14:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 210 proven. 469 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 04:14:20,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555540767] [2020-10-27 04:14:20,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:20,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:14:20,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651115714] [2020-10-27 04:14:20,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:14:20,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:14:20,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:14:20,634 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 19 states. [2020-10-27 04:14:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:21,227 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2020-10-27 04:14:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:14:21,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-27 04:14:21,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:21,228 INFO L225 Difference]: With dead ends: 109 [2020-10-27 04:14:21,228 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 04:14:21,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:14:21,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 04:14:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-27 04:14:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:14:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-27 04:14:21,241 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 111 [2020-10-27 04:14:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:21,241 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-27 04:14:21,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:14:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-27 04:14:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:14:21,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:21,243 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:21,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:14:21,243 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash 234253089, now seen corresponding path program 8 times [2020-10-27 04:14:21,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262273172] [2020-10-27 04:14:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:14:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:26,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 04:14:26,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:14:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 04:14:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:14:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 04:14:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 276 proven. 616 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:14:27,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262273172] [2020-10-27 04:14:27,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:27,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:14:27,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215409389] [2020-10-27 04:14:27,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:14:27,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:27,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:14:27,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:27,369 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 21 states. [2020-10-27 04:14:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:27,984 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions. [2020-10-27 04:14:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:14:27,984 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-10-27 04:14:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:27,985 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:14:27,985 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:14:27,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:14:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:14:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-27 04:14:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:14:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-10-27 04:14:27,999 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 122 [2020-10-27 04:14:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:28,000 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-10-27 04:14:28,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:14:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-10-27 04:14:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 04:14:28,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:28,001 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:28,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:14:28,002 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 349596080, now seen corresponding path program 9 times [2020-10-27 04:14:28,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:28,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649714315] [2020-10-27 04:14:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:33,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:14:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:14:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:14:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 351 proven. 783 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 04:14:34,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649714315] [2020-10-27 04:14:34,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:34,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:14:34,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323020111] [2020-10-27 04:14:34,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:14:34,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:14:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:14:34,213 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 23 states. [2020-10-27 04:14:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:34,943 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2020-10-27 04:14:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:14:34,943 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 133 [2020-10-27 04:14:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:34,945 INFO L225 Difference]: With dead ends: 125 [2020-10-27 04:14:34,945 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 04:14:34,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:14:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 04:14:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-27 04:14:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 04:14:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-27 04:14:34,955 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 133 [2020-10-27 04:14:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:34,955 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-27 04:14:34,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:14:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-27 04:14:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:14:34,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:34,957 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:34,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:14:34,958 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:34,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:34,958 INFO L82 PathProgramCache]: Analyzing trace with hash 529764869, now seen corresponding path program 10 times [2020-10-27 04:14:34,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:34,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109193897] [2020-10-27 04:14:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:14:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:14:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:14:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 04:14:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:41,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:41,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:41,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 04:14:41,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 435 proven. 970 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:14:41,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109193897] [2020-10-27 04:14:41,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:41,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:14:41,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610661018] [2020-10-27 04:14:41,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:14:41,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:14:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:14:41,150 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 25 states. [2020-10-27 04:14:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:41,974 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2020-10-27 04:14:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:14:41,975 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2020-10-27 04:14:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:41,976 INFO L225 Difference]: With dead ends: 133 [2020-10-27 04:14:41,976 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:14:41,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:14:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:14:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-27 04:14:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 04:14:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-27 04:14:41,986 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 144 [2020-10-27 04:14:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:41,986 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-27 04:14:41,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:14:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-27 04:14:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 04:14:41,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:41,989 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:41,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:14:41,989 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1106174412, now seen corresponding path program 11 times [2020-10-27 04:14:41,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:41,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410504435] [2020-10-27 04:14:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:47,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:14:47,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 04:14:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:14:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:47,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:47,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:47,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:47,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:14:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:48,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:48,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:48,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-27 04:14:48,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 04:14:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 528 proven. 1177 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 04:14:48,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410504435] [2020-10-27 04:14:48,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:48,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:14:48,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590393010] [2020-10-27 04:14:48,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:14:48,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:48,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:14:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:14:48,405 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 27 states. [2020-10-27 04:14:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:49,230 INFO L93 Difference]: Finished difference Result 141 states and 177 transitions. [2020-10-27 04:14:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:14:49,231 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 155 [2020-10-27 04:14:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:49,232 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:14:49,232 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 04:14:49,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:14:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 04:14:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-27 04:14:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:14:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-27 04:14:49,241 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 155 [2020-10-27 04:14:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:49,242 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-27 04:14:49,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:14:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-27 04:14:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 04:14:49,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:49,244 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:49,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:14:49,244 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:49,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:49,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1979391209, now seen corresponding path program 12 times [2020-10-27 04:14:49,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:49,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512267392] [2020-10-27 04:14:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:14:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:54,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:14:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:14:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2157 backedges. 630 proven. 1404 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:14:55,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512267392] [2020-10-27 04:14:55,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:55,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:14:55,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622498708] [2020-10-27 04:14:55,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:14:55,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:55,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:14:55,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:14:55,801 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 29 states. [2020-10-27 04:14:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:56,828 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2020-10-27 04:14:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:14:56,829 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 166 [2020-10-27 04:14:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:56,830 INFO L225 Difference]: With dead ends: 149 [2020-10-27 04:14:56,830 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 04:14:56,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:14:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 04:14:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-27 04:14:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 04:14:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-10-27 04:14:56,841 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 166 [2020-10-27 04:14:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:56,841 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-10-27 04:14:56,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:14:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-10-27 04:14:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 04:14:56,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:56,843 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:56,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:14:56,844 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:56,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2137860632, now seen corresponding path program 13 times [2020-10-27 04:14:56,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:56,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273349993] [2020-10-27 04:14:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:15:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:15:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:15:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2524 backedges. 741 proven. 1651 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 04:15:04,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273349993] [2020-10-27 04:15:04,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:04,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:15:04,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226708200] [2020-10-27 04:15:04,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:15:04,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:15:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:15:04,007 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 31 states. [2020-10-27 04:15:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:05,083 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2020-10-27 04:15:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:15:05,084 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 177 [2020-10-27 04:15:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:05,085 INFO L225 Difference]: With dead ends: 157 [2020-10-27 04:15:05,086 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 04:15:05,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:15:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 04:15:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 04:15:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 04:15:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2020-10-27 04:15:05,096 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 177 [2020-10-27 04:15:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:05,097 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2020-10-27 04:15:05,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:15:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2020-10-27 04:15:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:15:05,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:05,099 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:05,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:15:05,099 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:05,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1504293939, now seen corresponding path program 14 times [2020-10-27 04:15:05,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:05,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276203805] [2020-10-27 04:15:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:15:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:15:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:10,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:10,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:15:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 04:15:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2920 backedges. 861 proven. 1918 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:15:12,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276203805] [2020-10-27 04:15:12,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:12,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:15:12,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139271584] [2020-10-27 04:15:12,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:15:12,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:15:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:15:12,072 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 33 states. [2020-10-27 04:15:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:13,213 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-27 04:15:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:15:13,214 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2020-10-27 04:15:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:13,215 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:15:13,216 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:15:13,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:15:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:15:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-27 04:15:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 04:15:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-10-27 04:15:13,226 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 188 [2020-10-27 04:15:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:13,227 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-10-27 04:15:13,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:15:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-10-27 04:15:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 04:15:13,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:13,230 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:13,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:15:13,230 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:13,231 INFO L82 PathProgramCache]: Analyzing trace with hash -489093628, now seen corresponding path program 15 times [2020-10-27 04:15:13,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:13,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912267366] [2020-10-27 04:15:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:15:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:15:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:18,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:15:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:20,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:15:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3345 backedges. 990 proven. 2205 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 04:15:20,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912267366] [2020-10-27 04:15:20,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:20,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:15:20,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909954099] [2020-10-27 04:15:20,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:15:20,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:20,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:15:20,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:15:20,785 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 35 states. [2020-10-27 04:15:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:22,013 INFO L93 Difference]: Finished difference Result 173 states and 217 transitions. [2020-10-27 04:15:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:15:22,014 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 199 [2020-10-27 04:15:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:22,015 INFO L225 Difference]: With dead ends: 173 [2020-10-27 04:15:22,015 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 04:15:22,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:15:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 04:15:22,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-27 04:15:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:15:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2020-10-27 04:15:22,025 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 199 [2020-10-27 04:15:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:22,025 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2020-10-27 04:15:22,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:15:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2020-10-27 04:15:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:15:22,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:22,033 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:22,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:15:22,033 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:22,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1355701937, now seen corresponding path program 16 times [2020-10-27 04:15:22,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:22,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704185882] [2020-10-27 04:15:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:15:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:15:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:15:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 04:15:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 1128 proven. 2512 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:15:29,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704185882] [2020-10-27 04:15:29,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:29,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:15:29,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986993654] [2020-10-27 04:15:29,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:15:29,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:29,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:15:29,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:15:29,919 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand 37 states. [2020-10-27 04:15:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:31,165 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2020-10-27 04:15:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:15:31,166 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 210 [2020-10-27 04:15:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:31,168 INFO L225 Difference]: With dead ends: 181 [2020-10-27 04:15:31,168 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 04:15:31,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:15:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 04:15:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-27 04:15:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 04:15:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-10-27 04:15:31,177 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 210 [2020-10-27 04:15:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:31,178 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-10-27 04:15:31,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:15:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-10-27 04:15:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 04:15:31,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:31,181 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:31,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:15:31,181 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:31,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1842885152, now seen corresponding path program 17 times [2020-10-27 04:15:31,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:31,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210976699] [2020-10-27 04:15:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:15:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:36,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:36,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:15:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 04:15:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-27 04:15:38,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 04:15:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4282 backedges. 1275 proven. 2839 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-27 04:15:38,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210976699] [2020-10-27 04:15:38,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:38,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:15:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730093160] [2020-10-27 04:15:38,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:15:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:15:38,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:38,991 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 39 states. [2020-10-27 04:15:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:40,394 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2020-10-27 04:15:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:15:40,395 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 221 [2020-10-27 04:15:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:40,397 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:15:40,397 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 04:15:40,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:15:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 04:15:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-27 04:15:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 04:15:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2020-10-27 04:15:40,406 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 221 [2020-10-27 04:15:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:40,407 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2020-10-27 04:15:40,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:15:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2020-10-27 04:15:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:15:40,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:40,409 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:40,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:15:40,409 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1686934933, now seen corresponding path program 18 times [2020-10-27 04:15:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:40,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271850866] [2020-10-27 04:15:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:15:45,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:15:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:46,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 04:15:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:47,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:47,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:15:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:48,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1431 proven. 3186 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:15:48,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271850866] [2020-10-27 04:15:48,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:48,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:15:48,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443651757] [2020-10-27 04:15:48,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:15:48,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:15:48,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:15:48,314 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 41 states. [2020-10-27 04:15:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:49,947 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2020-10-27 04:15:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:15:49,947 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2020-10-27 04:15:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:49,949 INFO L225 Difference]: With dead ends: 197 [2020-10-27 04:15:49,949 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:15:49,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:15:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:15:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-27 04:15:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 04:15:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-10-27 04:15:49,958 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 232 [2020-10-27 04:15:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:49,959 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-10-27 04:15:49,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:15:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-10-27 04:15:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 04:15:49,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:49,960 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:49,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:15:49,961 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -710469060, now seen corresponding path program 19 times [2020-10-27 04:15:49,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:49,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854795896] [2020-10-27 04:15:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:15:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:15:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:56,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:15:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:15:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 1596 proven. 3553 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-27 04:15:58,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854795896] [2020-10-27 04:15:58,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:58,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:15:58,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20677132] [2020-10-27 04:15:58,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:15:58,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:58,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:15:58,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:15:58,621 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 43 states. [2020-10-27 04:16:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:00,214 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2020-10-27 04:16:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:16:00,215 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 243 [2020-10-27 04:16:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:00,216 INFO L225 Difference]: With dead ends: 205 [2020-10-27 04:16:00,216 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 04:16:00,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:16:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 04:16:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2020-10-27 04:16:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:16:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-27 04:16:00,226 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 243 [2020-10-27 04:16:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:00,227 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-27 04:16:00,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:16:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-27 04:16:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 04:16:00,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:00,229 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:00,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:16:00,229 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1673146489, now seen corresponding path program 20 times [2020-10-27 04:16:00,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:00,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115603780] [2020-10-27 04:16:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:16:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 04:16:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5905 backedges. 1770 proven. 3940 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-27 04:16:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115603780] [2020-10-27 04:16:08,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:08,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 04:16:08,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682702553] [2020-10-27 04:16:08,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 04:16:08,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 04:16:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:16:08,815 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 45 states. [2020-10-27 04:16:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:10,662 INFO L93 Difference]: Finished difference Result 213 states and 267 transitions. [2020-10-27 04:16:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:16:10,663 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 254 [2020-10-27 04:16:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:10,664 INFO L225 Difference]: With dead ends: 213 [2020-10-27 04:16:10,664 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 04:16:10,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 04:16:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 04:16:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 04:16:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 04:16:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-10-27 04:16:10,677 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 254 [2020-10-27 04:16:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:10,677 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-10-27 04:16:10,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 04:16:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-10-27 04:16:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-27 04:16:10,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:10,679 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:10,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:16:10,680 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:10,680 INFO L82 PathProgramCache]: Analyzing trace with hash 962362968, now seen corresponding path program 21 times [2020-10-27 04:16:10,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:10,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842932271] [2020-10-27 04:16:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 04:16:15,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:16:15,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:16:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:16:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 04:16:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6504 backedges. 1953 proven. 4347 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-27 04:16:19,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842932271] [2020-10-27 04:16:19,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:19,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 04:16:19,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336272685] [2020-10-27 04:16:19,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 04:16:19,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:19,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 04:16:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:16:19,683 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 47 states. [2020-10-27 04:16:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:21,673 INFO L93 Difference]: Finished difference Result 221 states and 277 transitions. [2020-10-27 04:16:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:16:21,675 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 265 [2020-10-27 04:16:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:21,676 INFO L225 Difference]: With dead ends: 221 [2020-10-27 04:16:21,676 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 04:16:21,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 04:16:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 04:16:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2020-10-27 04:16:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 04:16:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-10-27 04:16:21,686 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 265 [2020-10-27 04:16:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:21,686 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-10-27 04:16:21,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 04:16:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-10-27 04:16:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-27 04:16:21,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:21,688 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:21,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:16:21,688 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:21,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1484755107, now seen corresponding path program 22 times [2020-10-27 04:16:21,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:21,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002988792] [2020-10-27 04:16:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:26,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 04:16:26,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:26,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-27 04:16:26,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:16:26,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:16:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:16:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:29,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:30,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-27 04:16:30,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:16:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:31,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-27 04:16:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7132 backedges. 2145 proven. 4774 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-27 04:16:31,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002988792] [2020-10-27 04:16:31,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:31,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 04:16:31,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481952395] [2020-10-27 04:16:31,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 04:16:31,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 04:16:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:16:31,075 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 49 states. [2020-10-27 04:16:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:33,027 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2020-10-27 04:16:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 04:16:33,027 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 276 [2020-10-27 04:16:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:33,029 INFO L225 Difference]: With dead ends: 229 [2020-10-27 04:16:33,029 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 04:16:33,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 04:16:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 04:16:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-27 04:16:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 04:16:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2020-10-27 04:16:33,040 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 276 [2020-10-27 04:16:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:33,040 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2020-10-27 04:16:33,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 04:16:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2020-10-27 04:16:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-27 04:16:33,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:33,042 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:33,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:16:33,043 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:33,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:33,043 INFO L82 PathProgramCache]: Analyzing trace with hash -552657292, now seen corresponding path program 23 times [2020-10-27 04:16:33,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:33,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67154079] [2020-10-27 04:16:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:38,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 04:16:38,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-27 04:16:38,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:16:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:16:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:38,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:16:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:16:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-27 04:16:39,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:16:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:16:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 04:16:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:16:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:41,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-27 04:16:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:16:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7789 backedges. 2346 proven. 5221 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-27 04:16:43,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67154079] [2020-10-27 04:16:43,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:43,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 04:16:43,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781955256] [2020-10-27 04:16:43,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 04:16:43,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:43,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 04:16:43,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:16:43,037 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 51 states. [2020-10-27 04:16:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:45,314 INFO L93 Difference]: Finished difference Result 237 states and 297 transitions. [2020-10-27 04:16:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:16:45,315 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 287 [2020-10-27 04:16:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:45,317 INFO L225 Difference]: With dead ends: 237 [2020-10-27 04:16:45,317 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 04:16:45,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:16:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 04:16:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-27 04:16:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 04:16:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions. [2020-10-27 04:16:45,327 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 287 [2020-10-27 04:16:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:45,327 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 174 transitions. [2020-10-27 04:16:45,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 04:16:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions. [2020-10-27 04:16:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 04:16:45,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:45,329 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:45,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:16:45,330 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1542942143, now seen corresponding path program 24 times [2020-10-27 04:16:45,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:45,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212641558] [2020-10-27 04:16:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:16:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:16:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 04:16:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:16:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:16:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:16:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8475 backedges. 2556 proven. 5688 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 04:16:55,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212641558] [2020-10-27 04:16:55,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:55,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 04:16:55,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268775627] [2020-10-27 04:16:55,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 04:16:55,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:55,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 04:16:55,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:16:55,523 INFO L87 Difference]: Start difference. First operand 146 states and 174 transitions. Second operand 53 states. [2020-10-27 04:16:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:57,753 INFO L93 Difference]: Finished difference Result 245 states and 307 transitions. [2020-10-27 04:16:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:16:57,753 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 298 [2020-10-27 04:16:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:57,754 INFO L225 Difference]: With dead ends: 245 [2020-10-27 04:16:57,754 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 04:16:57,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 04:16:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 04:16:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2020-10-27 04:16:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 04:16:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-10-27 04:16:57,765 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 298 [2020-10-27 04:16:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:57,765 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-10-27 04:16:57,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 04:16:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-10-27 04:16:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 04:16:57,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:57,767 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:57,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:16:57,768 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash -271205744, now seen corresponding path program 25 times [2020-10-27 04:16:57,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:57,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643578959] [2020-10-27 04:16:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:17:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:04,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:04,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-27 04:17:04,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 04:17:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:17:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 04:17:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:17:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 04:17:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9190 backedges. 2775 proven. 6175 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-27 04:17:08,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643578959] [2020-10-27 04:17:08,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:08,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 04:17:08,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992538516] [2020-10-27 04:17:08,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 04:17:08,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:08,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 04:17:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:17:08,627 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 55 states. [2020-10-27 04:17:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:11,000 INFO L93 Difference]: Finished difference Result 253 states and 317 transitions. [2020-10-27 04:17:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 04:17:11,001 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 309 [2020-10-27 04:17:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:11,003 INFO L225 Difference]: With dead ends: 253 [2020-10-27 04:17:11,003 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 04:17:11,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 04:17:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 04:17:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2020-10-27 04:17:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 04:17:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2020-10-27 04:17:11,013 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 309 [2020-10-27 04:17:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:11,013 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2020-10-27 04:17:11,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 04:17:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2020-10-27 04:17:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-27 04:17:11,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:11,016 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:11,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:17:11,016 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:11,016 INFO L82 PathProgramCache]: Analyzing trace with hash 746314021, now seen corresponding path program 26 times [2020-10-27 04:17:11,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:11,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124433799] [2020-10-27 04:17:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:17:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:18,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:17:18,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 04:17:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0