/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-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:56:26,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:56:26,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:56:26,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:56:26,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:56:26,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:56:26,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:56:26,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:56:26,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:56:26,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:56:26,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:56:26,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:56:26,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:56:26,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:56:26,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:56:26,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:56:26,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:56:26,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:56:26,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:56:26,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:56:26,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:56:26,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:56:26,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:56:26,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:56:26,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:56:26,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:56:26,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:56:26,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:56:26,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:56:26,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:56:26,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:56:26,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:56:26,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:56:26,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:56:26,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:56:26,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:56:26,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:56:26,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:56:26,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:56:26,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:56:26,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:56:26,558 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 04:56:26,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:56:26,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:56:26,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:56:26,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:56:26,619 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:56:26,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:56:26,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:56:26,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:56:26,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:56:26,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:56:26,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:56:26,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:56:26,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:56:26,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:56:26,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:56:26,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:56:26,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:56:26,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:56:26,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:56:26,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:56:26,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:56:26,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:56:26,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:56:26,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:56:26,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:56:26,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:56:26,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:56:26,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:56:26,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:56:26,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:56:27,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:56:27,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:56:27,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:56:27,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:56:27,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:56:27,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:56:27,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a4bcfc1/e3d8e04e58b54e1b8cc5a8ed983fbea3/FLAGc4bc66dc5 [2020-10-27 04:56:28,091 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:56:28,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:56:28,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a4bcfc1/e3d8e04e58b54e1b8cc5a8ed983fbea3/FLAGc4bc66dc5 [2020-10-27 04:56:28,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a4bcfc1/e3d8e04e58b54e1b8cc5a8ed983fbea3 [2020-10-27 04:56:28,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:56:28,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:56:28,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:56:28,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:56:28,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:56:28,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:56:28" (1/1) ... [2020-10-27 04:56:28,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cfa140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:28, skipping insertion in model container [2020-10-27 04:56:28,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:56:28" (1/1) ... [2020-10-27 04:56:28,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:56:28,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:56:29,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:56:29,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:56:29,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:56:29,348 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:56:29,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29 WrapperNode [2020-10-27 04:56:29,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:56:29,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:56:29,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:56:29,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:56:29,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (1/1) ... [2020-10-27 04:56:29,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:56:29,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:56:29,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:56:29,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:56:29,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (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 04:56:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:56:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:56:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:56:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:56:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:56:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:56:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:56:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:56:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:56:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:56:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:56:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:56:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:56:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:56:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:56:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:56:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:56:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:56:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:56:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:56:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:56:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:56:31,568 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:56:31,568 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:56:31,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:56:31 BoogieIcfgContainer [2020-10-27 04:56:31,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:56:31,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:56:31,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:56:31,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:56:31,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:56:28" (1/3) ... [2020-10-27 04:56:31,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774e40c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:56:31, skipping insertion in model container [2020-10-27 04:56:31,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:56:29" (2/3) ... [2020-10-27 04:56:31,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774e40c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:56:31, skipping insertion in model container [2020-10-27 04:56:31,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:56:31" (3/3) ... [2020-10-27 04:56:31,581 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:56:31,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:56:31,600 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:56:31,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:56:31,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:56:31,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:56:31,648 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:56:31,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:56:31,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:56:31,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:56:31,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:56:31,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:56:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-27 04:56:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:56:31,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:31,697 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] [2020-10-27 04:56:31,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:31,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:31,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1514705107, now seen corresponding path program 1 times [2020-10-27 04:56:31,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:31,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862153052] [2020-10-27 04:56:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:37,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:37,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:56:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:56:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:56:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:56:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:56:37,929 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:37,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:37,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:56:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:38,121 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 04:56:38,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862153052] [2020-10-27 04:56:38,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:38,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:38,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303477062] [2020-10-27 04:56:38,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:38,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:38,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:38,158 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 5 states. [2020-10-27 04:56:41,682 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:56:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:43,042 INFO L93 Difference]: Finished difference Result 1090 states and 1976 transitions. [2020-10-27 04:56:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:43,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 04:56:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:43,087 INFO L225 Difference]: With dead ends: 1090 [2020-10-27 04:56:43,088 INFO L226 Difference]: Without dead ends: 717 [2020-10-27 04:56:43,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-27 04:56:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 695. [2020-10-27 04:56:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-27 04:56:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 998 transitions. [2020-10-27 04:56:43,247 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 998 transitions. Word has length 144 [2020-10-27 04:56:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:43,249 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 998 transitions. [2020-10-27 04:56:43,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 998 transitions. [2020-10-27 04:56:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 04:56:43,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:43,268 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] [2020-10-27 04:56:43,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:56:43,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:43,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1339131340, now seen corresponding path program 1 times [2020-10-27 04:56:43,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:43,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255454787] [2020-10-27 04:56:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:48,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:56:48,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:56:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:56:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:48,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:48,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:48,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:56:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:48,858 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:48,933 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 04:56:48,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255454787] [2020-10-27 04:56:48,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:48,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:48,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519143763] [2020-10-27 04:56:48,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:48,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:48,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:48,937 INFO L87 Difference]: Start difference. First operand 695 states and 998 transitions. Second operand 5 states. [2020-10-27 04:56:51,731 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:56:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:53,079 INFO L93 Difference]: Finished difference Result 2028 states and 2905 transitions. [2020-10-27 04:56:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:53,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 04:56:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:53,089 INFO L225 Difference]: With dead ends: 2028 [2020-10-27 04:56:53,089 INFO L226 Difference]: Without dead ends: 1344 [2020-10-27 04:56:53,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2020-10-27 04:56:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1325. [2020-10-27 04:56:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-27 04:56:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1882 transitions. [2020-10-27 04:56:53,182 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1882 transitions. Word has length 145 [2020-10-27 04:56:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:53,183 INFO L481 AbstractCegarLoop]: Abstraction has 1325 states and 1882 transitions. [2020-10-27 04:56:53,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1882 transitions. [2020-10-27 04:56:53,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:56:53,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:53,187 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] [2020-10-27 04:56:53,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:56:53,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1345685778, now seen corresponding path program 1 times [2020-10-27 04:56:53,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:53,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629642259] [2020-10-27 04:56:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:58,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:56:58,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:56:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:58,781 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:56:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:58,868 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 04:56:58,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629642259] [2020-10-27 04:56:58,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:58,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:58,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878965458] [2020-10-27 04:56:58,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:58,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:58,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:58,875 INFO L87 Difference]: Start difference. First operand 1325 states and 1882 transitions. Second operand 5 states. [2020-10-27 04:57:01,797 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:03,134 INFO L93 Difference]: Finished difference Result 3812 states and 5385 transitions. [2020-10-27 04:57:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:03,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:57:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:03,152 INFO L225 Difference]: With dead ends: 3812 [2020-10-27 04:57:03,152 INFO L226 Difference]: Without dead ends: 2544 [2020-10-27 04:57:03,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-10-27 04:57:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2520. [2020-10-27 04:57:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2520 states. [2020-10-27 04:57:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3529 transitions. [2020-10-27 04:57:03,287 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3529 transitions. Word has length 146 [2020-10-27 04:57:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:03,288 INFO L481 AbstractCegarLoop]: Abstraction has 2520 states and 3529 transitions. [2020-10-27 04:57:03,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3529 transitions. [2020-10-27 04:57:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:57:03,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:03,293 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] [2020-10-27 04:57:03,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:57:03,294 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:03,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1316514070, now seen corresponding path program 1 times [2020-10-27 04:57:03,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:03,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949333169] [2020-10-27 04:57:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:57:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:57:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:57:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 04:57:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:09,084 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:09,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:09,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:09,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:57:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:09,205 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 04:57:09,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949333169] [2020-10-27 04:57:09,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:09,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:09,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158890203] [2020-10-27 04:57:09,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:09,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:09,209 INFO L87 Difference]: Start difference. First operand 2520 states and 3529 transitions. Second operand 5 states. [2020-10-27 04:57:12,196 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:13,482 INFO L93 Difference]: Finished difference Result 7309 states and 10215 transitions. [2020-10-27 04:57:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:13,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:57:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:13,507 INFO L225 Difference]: With dead ends: 7309 [2020-10-27 04:57:13,507 INFO L226 Difference]: Without dead ends: 4881 [2020-10-27 04:57:13,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2020-10-27 04:57:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 4857. [2020-10-27 04:57:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4857 states. [2020-10-27 04:57:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 6718 transitions. [2020-10-27 04:57:13,751 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 6718 transitions. Word has length 147 [2020-10-27 04:57:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:13,751 INFO L481 AbstractCegarLoop]: Abstraction has 4857 states and 6718 transitions. [2020-10-27 04:57:13,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 6718 transitions. [2020-10-27 04:57:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:57:13,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:13,761 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] [2020-10-27 04:57:13,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:57:13,762 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 781573553, now seen corresponding path program 1 times [2020-10-27 04:57:13,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:13,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520622653] [2020-10-27 04:57:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:18,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:57:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:57:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:57:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 04:57:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:19,516 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:19,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:19,640 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 04:57:19,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520622653] [2020-10-27 04:57:19,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:19,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:19,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029332002] [2020-10-27 04:57:19,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:19,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:19,654 INFO L87 Difference]: Start difference. First operand 4857 states and 6718 transitions. Second operand 5 states. [2020-10-27 04:57:22,915 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:24,431 INFO L93 Difference]: Finished difference Result 13304 states and 18485 transitions. [2020-10-27 04:57:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:24,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:57:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:24,480 INFO L225 Difference]: With dead ends: 13304 [2020-10-27 04:57:24,481 INFO L226 Difference]: Without dead ends: 9392 [2020-10-27 04:57:24,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2020-10-27 04:57:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 9375. [2020-10-27 04:57:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9375 states. [2020-10-27 04:57:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9375 states to 9375 states and 12767 transitions. [2020-10-27 04:57:25,136 INFO L78 Accepts]: Start accepts. Automaton has 9375 states and 12767 transitions. Word has length 148 [2020-10-27 04:57:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:25,136 INFO L481 AbstractCegarLoop]: Abstraction has 9375 states and 12767 transitions. [2020-10-27 04:57:25,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9375 states and 12767 transitions. [2020-10-27 04:57:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:57:25,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:25,152 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] [2020-10-27 04:57:25,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:57:25,152 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:25,153 INFO L82 PathProgramCache]: Analyzing trace with hash 593923509, now seen corresponding path program 1 times [2020-10-27 04:57:25,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:25,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154479276] [2020-10-27 04:57:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:57:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:30,689 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:30,765 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 04:57:30,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154479276] [2020-10-27 04:57:30,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:30,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:30,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871261578] [2020-10-27 04:57:30,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:30,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:30,768 INFO L87 Difference]: Start difference. First operand 9375 states and 12767 transitions. Second operand 5 states. [2020-10-27 04:57:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:33,111 INFO L93 Difference]: Finished difference Result 15265 states and 20765 transitions. [2020-10-27 04:57:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:57:33,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:57:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:33,136 INFO L225 Difference]: With dead ends: 15265 [2020-10-27 04:57:33,136 INFO L226 Difference]: Without dead ends: 6032 [2020-10-27 04:57:33,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:57:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2020-10-27 04:57:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 6032. [2020-10-27 04:57:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6032 states. [2020-10-27 04:57:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 8172 transitions. [2020-10-27 04:57:33,502 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 8172 transitions. Word has length 149 [2020-10-27 04:57:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:33,502 INFO L481 AbstractCegarLoop]: Abstraction has 6032 states and 8172 transitions. [2020-10-27 04:57:33,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 8172 transitions. [2020-10-27 04:57:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:57:33,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:33,515 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] [2020-10-27 04:57:33,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:57:33,515 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2020230048, now seen corresponding path program 1 times [2020-10-27 04:57:33,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:33,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434636732] [2020-10-27 04:57:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:38,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:57:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:57:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:57:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:57:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:39,162 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:39,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:39,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:57:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:39,324 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 04:57:39,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434636732] [2020-10-27 04:57:39,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:39,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:57:39,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605582445] [2020-10-27 04:57:39,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:57:39,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:57:39,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:57:39,328 INFO L87 Difference]: Start difference. First operand 6032 states and 8172 transitions. Second operand 11 states. [2020-10-27 04:57:39,839 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:42,979 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 04:57:45,081 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 04:57:45,755 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 04:57:46,423 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 04:57:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:47,338 INFO L93 Difference]: Finished difference Result 25313 states and 37067 transitions. [2020-10-27 04:57:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:57:47,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-10-27 04:57:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:47,414 INFO L225 Difference]: With dead ends: 25313 [2020-10-27 04:57:47,414 INFO L226 Difference]: Without dead ends: 20420 [2020-10-27 04:57:47,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:57:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20420 states. [2020-10-27 04:57:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20420 to 7968. [2020-10-27 04:57:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7968 states. [2020-10-27 04:57:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 10864 transitions. [2020-10-27 04:57:48,263 INFO L78 Accepts]: Start accepts. Automaton has 7968 states and 10864 transitions. Word has length 157 [2020-10-27 04:57:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:48,265 INFO L481 AbstractCegarLoop]: Abstraction has 7968 states and 10864 transitions. [2020-10-27 04:57:48,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:57:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 7968 states and 10864 transitions. [2020-10-27 04:57:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:57:48,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:48,277 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] [2020-10-27 04:57:48,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:57:48,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:48,278 INFO L82 PathProgramCache]: Analyzing trace with hash 73250657, now seen corresponding path program 1 times [2020-10-27 04:57:48,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:48,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561781013] [2020-10-27 04:57:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:53,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:57:53,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:57:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:57:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:57:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:53,835 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:53,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:57:53,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:53,941 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 04:57:53,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561781013] [2020-10-27 04:57:53,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:53,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:53,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174563315] [2020-10-27 04:57:53,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:57:53,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:57:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:57:53,944 INFO L87 Difference]: Start difference. First operand 7968 states and 10864 transitions. Second operand 6 states. [2020-10-27 04:57:54,442 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 04:57:56,612 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 04:57:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:57,781 INFO L93 Difference]: Finished difference Result 18840 states and 26429 transitions. [2020-10-27 04:57:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:57:57,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-27 04:57:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:57,810 INFO L225 Difference]: With dead ends: 18840 [2020-10-27 04:57:57,810 INFO L226 Difference]: Without dead ends: 12126 [2020-10-27 04:57:57,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:57:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12126 states. [2020-10-27 04:57:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12126 to 12120. [2020-10-27 04:57:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12120 states. [2020-10-27 04:57:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12120 states to 12120 states and 16916 transitions. [2020-10-27 04:57:59,241 INFO L78 Accepts]: Start accepts. Automaton has 12120 states and 16916 transitions. Word has length 157 [2020-10-27 04:57:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:59,242 INFO L481 AbstractCegarLoop]: Abstraction has 12120 states and 16916 transitions. [2020-10-27 04:57:59,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:57:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states and 16916 transitions. [2020-10-27 04:57:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:57:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:59,257 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] [2020-10-27 04:57:59,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:57:59,258 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1008138597, now seen corresponding path program 1 times [2020-10-27 04:57:59,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:59,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852220840] [2020-10-27 04:57:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:04,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:58:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:04,788 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:04,850 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 04:58:04,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852220840] [2020-10-27 04:58:04,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:04,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:04,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736962694] [2020-10-27 04:58:04,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:04,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:04,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:04,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:04,854 INFO L87 Difference]: Start difference. First operand 12120 states and 16916 transitions. Second operand 5 states. [2020-10-27 04:58:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:07,511 INFO L93 Difference]: Finished difference Result 19677 states and 27517 transitions. [2020-10-27 04:58:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:07,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 04:58:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:07,534 INFO L225 Difference]: With dead ends: 19677 [2020-10-27 04:58:07,534 INFO L226 Difference]: Without dead ends: 9744 [2020-10-27 04:58:07,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2020-10-27 04:58:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 9744. [2020-10-27 04:58:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9744 states. [2020-10-27 04:58:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 13517 transitions. [2020-10-27 04:58:08,478 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 13517 transitions. Word has length 157 [2020-10-27 04:58:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:08,478 INFO L481 AbstractCegarLoop]: Abstraction has 9744 states and 13517 transitions. [2020-10-27 04:58:08,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 13517 transitions. [2020-10-27 04:58:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 04:58:08,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:08,491 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] [2020-10-27 04:58:08,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:58:08,492 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2092136159, now seen corresponding path program 1 times [2020-10-27 04:58:08,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:08,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413490569] [2020-10-27 04:58:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:08,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:13,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 04:58:13,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:58:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:58:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:58:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:14,019 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:14,084 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 04:58:14,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413490569] [2020-10-27 04:58:14,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:14,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:14,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148949570] [2020-10-27 04:58:14,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:14,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:14,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:14,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:14,086 INFO L87 Difference]: Start difference. First operand 9744 states and 13517 transitions. Second operand 5 states. [2020-10-27 04:58:17,221 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:58:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:19,356 INFO L93 Difference]: Finished difference Result 25780 states and 35812 transitions. [2020-10-27 04:58:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:19,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-27 04:58:19,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:19,387 INFO L225 Difference]: With dead ends: 25780 [2020-10-27 04:58:19,387 INFO L226 Difference]: Without dead ends: 17084 [2020-10-27 04:58:19,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17084 states. [2020-10-27 04:58:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17084 to 17056. [2020-10-27 04:58:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17056 states. [2020-10-27 04:58:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17056 states to 17056 states and 23252 transitions. [2020-10-27 04:58:21,117 INFO L78 Accepts]: Start accepts. Automaton has 17056 states and 23252 transitions. Word has length 163 [2020-10-27 04:58:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:21,117 INFO L481 AbstractCegarLoop]: Abstraction has 17056 states and 23252 transitions. [2020-10-27 04:58:21,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 17056 states and 23252 transitions. [2020-10-27 04:58:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 04:58:21,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:21,150 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] [2020-10-27 04:58:21,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:58:21,151 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1787039142, now seen corresponding path program 1 times [2020-10-27 04:58:21,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:21,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713600262] [2020-10-27 04:58:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:58:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:58:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:26,713 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:26,768 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 04:58:26,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713600262] [2020-10-27 04:58:26,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:26,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:26,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836714131] [2020-10-27 04:58:26,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:26,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:26,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:26,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:26,770 INFO L87 Difference]: Start difference. First operand 17056 states and 23252 transitions. Second operand 5 states. [2020-10-27 04:58:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:29,636 INFO L93 Difference]: Finished difference Result 29721 states and 40505 transitions. [2020-10-27 04:58:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:29,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-27 04:58:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:29,651 INFO L225 Difference]: With dead ends: 29721 [2020-10-27 04:58:29,651 INFO L226 Difference]: Without dead ends: 12745 [2020-10-27 04:58:29,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2020-10-27 04:58:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 12745. [2020-10-27 04:58:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12745 states. [2020-10-27 04:58:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17361 transitions. [2020-10-27 04:58:30,863 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17361 transitions. Word has length 164 [2020-10-27 04:58:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:30,863 INFO L481 AbstractCegarLoop]: Abstraction has 12745 states and 17361 transitions. [2020-10-27 04:58:30,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17361 transitions. [2020-10-27 04:58:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 04:58:30,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:30,877 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] [2020-10-27 04:58:30,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:58:30,878 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash -727744368, now seen corresponding path program 1 times [2020-10-27 04:58:30,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:30,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667440395] [2020-10-27 04:58:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:58:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 04:58:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:36,942 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:37,042 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 04:58:37,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667440395] [2020-10-27 04:58:37,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:37,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:58:37,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661100779] [2020-10-27 04:58:37,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:58:37,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:37,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:58:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:58:37,045 INFO L87 Difference]: Start difference. First operand 12745 states and 17361 transitions. Second operand 14 states. [2020-10-27 04:58:38,068 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 231 [2020-10-27 04:58:43,650 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 234 [2020-10-27 04:58:44,139 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 04:58:44,680 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:58:45,687 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 232 [2020-10-27 04:58:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:50,698 INFO L93 Difference]: Finished difference Result 47346 states and 67831 transitions. [2020-10-27 04:58:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:58:50,700 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-27 04:58:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:50,756 INFO L225 Difference]: With dead ends: 47346 [2020-10-27 04:58:50,757 INFO L226 Difference]: Without dead ends: 42952 [2020-10-27 04:58:50,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:58:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42952 states. [2020-10-27 04:58:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42952 to 14181. [2020-10-27 04:58:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14181 states. [2020-10-27 04:58:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 19021 transitions. [2020-10-27 04:58:52,339 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 19021 transitions. Word has length 172 [2020-10-27 04:58:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:52,340 INFO L481 AbstractCegarLoop]: Abstraction has 14181 states and 19021 transitions. [2020-10-27 04:58:52,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:58:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 19021 transitions. [2020-10-27 04:58:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 04:58:52,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:52,355 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] [2020-10-27 04:58:52,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:58:52,356 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash 58961982, now seen corresponding path program 1 times [2020-10-27 04:58:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:52,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397108153] [2020-10-27 04:58:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:58:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 04:58:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:58,195 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:58:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:58,334 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 04:58:58,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397108153] [2020-10-27 04:58:58,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:58,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:58:58,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954095664] [2020-10-27 04:58:58,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:58:58,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:58,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:58:58,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:58:58,337 INFO L87 Difference]: Start difference. First operand 14181 states and 19021 transitions. Second operand 11 states. [2020-10-27 04:58:58,835 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 04:59:04,520 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 04:59:05,003 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:59:05,490 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 04:59:06,009 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 04:59:06,530 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 04:59:07,137 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 04:59:08,206 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-10-27 04:59:08,702 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 04:59:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:18,532 INFO L93 Difference]: Finished difference Result 73614 states and 107650 transitions. [2020-10-27 04:59:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:59:18,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-10-27 04:59:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:18,631 INFO L225 Difference]: With dead ends: 73614 [2020-10-27 04:59:18,631 INFO L226 Difference]: Without dead ends: 67796 [2020-10-27 04:59:18,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:59:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67796 states. [2020-10-27 04:59:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67796 to 21356. [2020-10-27 04:59:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21356 states. [2020-10-27 04:59:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21356 states to 21356 states and 29384 transitions. [2020-10-27 04:59:21,851 INFO L78 Accepts]: Start accepts. Automaton has 21356 states and 29384 transitions. Word has length 172 [2020-10-27 04:59:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:21,851 INFO L481 AbstractCegarLoop]: Abstraction has 21356 states and 29384 transitions. [2020-10-27 04:59:21,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:59:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 21356 states and 29384 transitions. [2020-10-27 04:59:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 04:59:21,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:21,864 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] [2020-10-27 04:59:21,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:59:21,864 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1384445990, now seen corresponding path program 1 times [2020-10-27 04:59:21,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:21,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034243222] [2020-10-27 04:59:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:22,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:59:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:59:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:59:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:59:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:27,661 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:59:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:27,751 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 04:59:27,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034243222] [2020-10-27 04:59:27,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:27,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:59:27,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692932618] [2020-10-27 04:59:27,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:59:27,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:59:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:59:27,753 INFO L87 Difference]: Start difference. First operand 21356 states and 29384 transitions. Second operand 12 states. [2020-10-27 04:59:28,366 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-27 04:59:32,174 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:59:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:35,675 INFO L93 Difference]: Finished difference Result 38551 states and 53482 transitions. [2020-10-27 04:59:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:59:35,676 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2020-10-27 04:59:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:35,710 INFO L225 Difference]: With dead ends: 38551 [2020-10-27 04:59:35,710 INFO L226 Difference]: Without dead ends: 27199 [2020-10-27 04:59:35,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:59:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27199 states. [2020-10-27 04:59:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27199 to 21774. [2020-10-27 04:59:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21774 states. [2020-10-27 04:59:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21774 states to 21774 states and 29874 transitions. [2020-10-27 04:59:38,555 INFO L78 Accepts]: Start accepts. Automaton has 21774 states and 29874 transitions. Word has length 172 [2020-10-27 04:59:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:38,556 INFO L481 AbstractCegarLoop]: Abstraction has 21774 states and 29874 transitions. [2020-10-27 04:59:38,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:59:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 21774 states and 29874 transitions. [2020-10-27 04:59:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 04:59:38,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:38,564 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] [2020-10-27 04:59:38,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:59:38,565 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash 859551215, now seen corresponding path program 1 times [2020-10-27 04:59:38,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:38,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628714041] [2020-10-27 04:59:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:43,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:59:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 04:59:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:43,941 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-10-27 04:59:44,532 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:59:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:44,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:44,664 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 04:59:44,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628714041] [2020-10-27 04:59:44,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:44,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:59:44,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230519854] [2020-10-27 04:59:44,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:59:44,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:59:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:59:44,666 INFO L87 Difference]: Start difference. First operand 21774 states and 29874 transitions. Second operand 11 states. [2020-10-27 04:59:45,188 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 04:59:52,325 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 04:59:52,801 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 04:59:53,237 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:59:53,793 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-27 04:59:54,302 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 238