/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/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:45:02,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:45:02,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:45:02,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:45:02,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:45:02,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:45:02,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:45:02,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:45:02,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:45:02,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:45:02,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:45:02,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:45:02,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:45:02,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:45:02,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:45:02,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:45:02,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:45:02,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:45:02,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:45:02,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:45:02,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:45:02,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:45:02,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:45:02,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:45:02,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:45:02,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:45:02,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:45:02,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:45:02,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:45:02,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:45:02,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:45:02,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:45:02,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:45:02,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:45:02,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:45:02,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:45:02,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:45:02,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:45:02,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:45:02,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:45:02,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:45:02,494 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 04:45:02,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:45:02,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:45:02,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:45:02,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:45:02,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:45:02,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:45:02,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:45:02,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:45:02,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:45:02,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:45:02,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:45:02,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:45:02,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:45:02,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:45:02,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:45:02,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:45:02,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:45:02,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:45:02,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:45:02,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:45:02,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:45:02,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:02,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:45:02,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:45:02,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:45:02,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:45:02,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:45:02,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:45:02,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:45:02,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:45:02,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:45:03,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:45:03,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:45:03,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:45:03,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:45:03,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:03,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76a517fb3/8a07b709c1e1431ab01cb98d3ce888e4/FLAGead738032 [2020-10-27 04:45:03,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:45:03,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:04,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76a517fb3/8a07b709c1e1431ab01cb98d3ce888e4/FLAGead738032 [2020-10-27 04:45:04,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76a517fb3/8a07b709c1e1431ab01cb98d3ce888e4 [2020-10-27 04:45:04,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:45:04,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:45:04,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:04,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:45:04,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:45:04,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e926559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04, skipping insertion in model container [2020-10-27 04:45:04,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:45:04,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:45:04,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:04,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:45:05,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:05,175 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:45:05,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05 WrapperNode [2020-10-27 04:45:05,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:05,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:45:05,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:45:05,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:45:05,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (1/1) ... [2020-10-27 04:45:05,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:45:05,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:45:05,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:45:05,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:45:05,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (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 04:45:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:45:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:45:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:45:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:45:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:45:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:45:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:45:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:45:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:45:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:45:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:45:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:45:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:45:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:45:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:45:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:45:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:45:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:45:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:45:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:45:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:45:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:45:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:45:08,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:45:08,277 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:45:08,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:08 BoogieIcfgContainer [2020-10-27 04:45:08,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:45:08,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:45:08,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:45:08,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:45:08,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:04" (1/3) ... [2020-10-27 04:45:08,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4434cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:08, skipping insertion in model container [2020-10-27 04:45:08,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:05" (2/3) ... [2020-10-27 04:45:08,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4434cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:08, skipping insertion in model container [2020-10-27 04:45:08,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:08" (3/3) ... [2020-10-27 04:45:08,290 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:08,302 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:45:08,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:45:08,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:45:08,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:45:08,355 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:45:08,355 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:45:08,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:45:08,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:45:08,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:45:08,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:45:08,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:45:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states. [2020-10-27 04:45:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:45:08,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:08,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:08,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:08,434 INFO L82 PathProgramCache]: Analyzing trace with hash 41819709, now seen corresponding path program 1 times [2020-10-27 04:45:08,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:08,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543247189] [2020-10-27 04:45:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:45:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3952 [2020-10-27 04:45:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:45:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:45:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:45:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:45:14,409 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:14,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:14,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:14,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:45:14,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:45:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-27 04:45:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:45:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:45:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:15,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:45:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:45:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:45:15,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:45:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:15,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:45:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:45:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:45:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:45:15,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:45:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:45:15,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:45:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:45:16,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:45:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:16,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:16,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:16,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543247189] [2020-10-27 04:45:16,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:16,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:45:16,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613921140] [2020-10-27 04:45:16,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:45:16,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:16,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:45:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:45:16,175 INFO L87 Difference]: Start difference. First operand 786 states. Second operand 14 states. [2020-10-27 04:45:27,415 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:45:28,796 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:45:30,248 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:45:31,432 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:45:33,070 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:34,074 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:35,195 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:36,324 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:37,408 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:38,744 INFO L93 Difference]: Finished difference Result 1079 states and 1897 transitions. [2020-10-27 04:45:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:45:38,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:45:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:38,781 INFO L225 Difference]: With dead ends: 1079 [2020-10-27 04:45:38,781 INFO L226 Difference]: Without dead ends: 848 [2020-10-27 04:45:38,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:45:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-27 04:45:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 778. [2020-10-27 04:45:39,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-27 04:45:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1337 transitions. [2020-10-27 04:45:39,089 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1337 transitions. Word has length 188 [2020-10-27 04:45:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:39,092 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1337 transitions. [2020-10-27 04:45:39,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:45:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1337 transitions. [2020-10-27 04:45:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 04:45:39,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:39,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:39,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:45:39,112 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:39,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:39,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1482097823, now seen corresponding path program 1 times [2020-10-27 04:45:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:39,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778701650] [2020-10-27 04:45:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 04:45:44,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:45:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 04:45:44,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:45:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:45:44,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:45,656 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:45,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:45,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:45:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:45:46,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:45:46,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:45:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:45:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:45:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:45:46,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:45:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:45:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:45:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:46,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:46,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:45:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:46,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:46,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:46,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:46,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:45:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:45:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:46,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:45:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 04:45:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:46,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:46,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:46,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:45:46,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:46,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:46,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778701650] [2020-10-27 04:45:46,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:46,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:45:46,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652409416] [2020-10-27 04:45:46,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:45:46,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:46,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:45:46,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:45:46,973 INFO L87 Difference]: Start difference. First operand 778 states and 1337 transitions. Second operand 11 states. [2020-10-27 04:45:48,194 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:45:56,453 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:56,953 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:57,732 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:45:58,261 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:58,997 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:45:59,819 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:00,607 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:01,398 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:02,177 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:02,971 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:05,126 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:46:05,805 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:46:06,148 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:46:06,662 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:46:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:06,884 INFO L93 Difference]: Finished difference Result 1358 states and 2290 transitions. [2020-10-27 04:46:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:46:06,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 04:46:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:06,897 INFO L225 Difference]: With dead ends: 1358 [2020-10-27 04:46:06,898 INFO L226 Difference]: Without dead ends: 1143 [2020-10-27 04:46:06,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:46:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-10-27 04:46:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 993. [2020-10-27 04:46:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-10-27 04:46:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1685 transitions. [2020-10-27 04:46:07,083 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1685 transitions. Word has length 252 [2020-10-27 04:46:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:07,084 INFO L481 AbstractCegarLoop]: Abstraction has 993 states and 1685 transitions. [2020-10-27 04:46:07,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:46:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1685 transitions. [2020-10-27 04:46:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 04:46:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:07,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:07,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:46:07,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2078500617, now seen corresponding path program 1 times [2020-10-27 04:46:07,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:07,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560523992] [2020-10-27 04:46:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:12,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:46:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-27 04:46:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,815 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:13,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:46:13,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-27 04:46:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:46:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:46:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:46:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:46:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:46:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:46:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:46:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:14,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:46:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:15,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:15,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:15,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:15,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 04:46:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 04:46:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:15,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:15,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 04:46:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:15,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:15,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560523992] [2020-10-27 04:46:15,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:15,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:15,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510116695] [2020-10-27 04:46:15,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:15,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:15,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:15,456 INFO L87 Difference]: Start difference. First operand 993 states and 1685 transitions. Second operand 11 states. [2020-10-27 04:46:16,790 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:18,022 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:46:19,286 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:20,539 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:34,332 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:34,948 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:35,445 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:36,591 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:36,997 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:38,049 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:38,633 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:39,823 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:40,363 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:41,511 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:42,075 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:43,861 INFO L93 Difference]: Finished difference Result 3203 states and 5436 transitions. [2020-10-27 04:46:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:46:43,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 04:46:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:43,875 INFO L225 Difference]: With dead ends: 3203 [2020-10-27 04:46:43,875 INFO L226 Difference]: Without dead ends: 2228 [2020-10-27 04:46:43,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:46:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2020-10-27 04:46:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1957. [2020-10-27 04:46:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-27 04:46:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3294 transitions. [2020-10-27 04:46:44,215 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3294 transitions. Word has length 256 [2020-10-27 04:46:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:44,216 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3294 transitions. [2020-10-27 04:46:44,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:46:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3294 transitions. [2020-10-27 04:46:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:46:44,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:44,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:44,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:46:44,225 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1098626365, now seen corresponding path program 1 times [2020-10-27 04:46:44,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:44,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931252581] [2020-10-27 04:46:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:49,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:46:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-27 04:46:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:50,623 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:50,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:50,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:50,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:51,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-27 04:46:51,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:46:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:51,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:46:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:46:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:46:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:46:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:46:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:51,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:52,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931252581] [2020-10-27 04:46:52,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:52,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:52,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130830938] [2020-10-27 04:46:52,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:52,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:52,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:52,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:52,156 INFO L87 Difference]: Start difference. First operand 1957 states and 3294 transitions. Second operand 11 states. [2020-10-27 04:46:53,383 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:54,604 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:46:55,879 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:46:59,533 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:47:19,323 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:20,102 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:20,570 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:21,496 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:22,713 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:23,191 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:23,805 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:24,932 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:25,609 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:26,492 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:27,553 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:28,227 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:28,977 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:30,086 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:30,750 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:31,564 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:33,981 INFO L93 Difference]: Finished difference Result 7839 states and 13212 transitions. [2020-10-27 04:47:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:47:33,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:47:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:34,020 INFO L225 Difference]: With dead ends: 7839 [2020-10-27 04:47:34,020 INFO L226 Difference]: Without dead ends: 5982 [2020-10-27 04:47:34,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:47:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5982 states. [2020-10-27 04:47:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5982 to 5328. [2020-10-27 04:47:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5328 states. [2020-10-27 04:47:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 8952 transitions. [2020-10-27 04:47:35,028 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 8952 transitions. Word has length 257 [2020-10-27 04:47:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:35,029 INFO L481 AbstractCegarLoop]: Abstraction has 5328 states and 8952 transitions. [2020-10-27 04:47:35,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 8952 transitions. [2020-10-27 04:47:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:47:35,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:35,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:35,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:47:35,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:35,047 INFO L82 PathProgramCache]: Analyzing trace with hash -906231529, now seen corresponding path program 1 times [2020-10-27 04:47:35,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671955346] [2020-10-27 04:47:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:47:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:41,512 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:41,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:47:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:42,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:47:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:47:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:47:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 04:47:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:42,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-27 04:47:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-27 04:47:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-27 04:47:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-27 04:47:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:42,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671955346] [2020-10-27 04:47:42,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:42,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:42,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672918953] [2020-10-27 04:47:42,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:42,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:42,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:42,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:42,893 INFO L87 Difference]: Start difference. First operand 5328 states and 8952 transitions. Second operand 11 states. [2020-10-27 04:47:44,117 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:45,465 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:47:46,841 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:47:50,530 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:48:13,517 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:48:14,222 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:14,754 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:15,582 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:16,856 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:17,328 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:17,772 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:18,865 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:19,540 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:20,093 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:21,241 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:21,842 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:22,386 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:23,504 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:24,167 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:24,722 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:26,995 INFO L93 Difference]: Finished difference Result 21686 states and 36486 transitions. [2020-10-27 04:48:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:26,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2020-10-27 04:48:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:27,073 INFO L225 Difference]: With dead ends: 21686 [2020-10-27 04:48:27,073 INFO L226 Difference]: Without dead ends: 16504 [2020-10-27 04:48:27,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16504 states. [2020-10-27 04:48:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16504 to 14898. [2020-10-27 04:48:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14898 states. [2020-10-27 04:48:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14898 states to 14898 states and 24962 transitions. [2020-10-27 04:48:29,964 INFO L78 Accepts]: Start accepts. Automaton has 14898 states and 24962 transitions. Word has length 258 [2020-10-27 04:48:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:48:29,964 INFO L481 AbstractCegarLoop]: Abstraction has 14898 states and 24962 transitions. [2020-10-27 04:48:29,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:48:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14898 states and 24962 transitions. [2020-10-27 04:48:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-27 04:48:30,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:48:30,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:48:30,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:48:30,007 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:48:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:48:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash 609824792, now seen corresponding path program 1 times [2020-10-27 04:48:30,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:48:30,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006136100] [2020-10-27 04:48:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:48:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:35,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:35,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 04:48:35,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:48:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:48:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:48:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-27 04:48:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:36,441 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:48:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:48:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:36,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:48:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:36,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:48:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:37,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:48:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:48:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:48:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:37,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:48:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:37,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:48:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-27 04:48:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:37,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:37,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:37,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 04:48:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:37,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:37,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006136100] [2020-10-27 04:48:37,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:37,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:37,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276464111] [2020-10-27 04:48:37,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:37,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:37,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:37,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:37,779 INFO L87 Difference]: Start difference. First operand 14898 states and 24962 transitions. Second operand 11 states. [2020-10-27 04:48:39,059 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:48:40,427 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:48:41,845 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 414