/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:33:59,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:33:59,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:33:59,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:33:59,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:33:59,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:33:59,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:33:59,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:33:59,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:33:59,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:33:59,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:33:59,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:33:59,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:33:59,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:33:59,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:33:59,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:33:59,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:33:59,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:33:59,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:33:59,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:33:59,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:33:59,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:33:59,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:33:59,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:33:59,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:33:59,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:33:59,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:33:59,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:33:59,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:33:59,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:33:59,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:33:59,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:33:59,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:33:59,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:33:59,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:33:59,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:33:59,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:33:59,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:33:59,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:33:59,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:33:59,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:33:59,419 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 23:33:59,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:33:59,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:33:59,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:33:59,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:33:59,448 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:33:59,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:33:59,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:33:59,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:33:59,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:33:59,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:33:59,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:33:59,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:33:59,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:33:59,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:33:59,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:33:59,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:33:59,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:33:59,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:33:59,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:33:59,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:33:59,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:33:59,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:59,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:33:59,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:33:59,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:33:59,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:33:59,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:33:59,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:33:59,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:33:59,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:33:59,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:33:59,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:33:59,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:33:59,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:33:59,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:33:59,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:33:59,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b6ae5fb/4e70bd3a5f3444b3b753f9766fded779/FLAG33d62e23f [2020-10-27 23:34:00,819 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:34:00,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:34:00,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b6ae5fb/4e70bd3a5f3444b3b753f9766fded779/FLAG33d62e23f [2020-10-27 23:34:00,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b6ae5fb/4e70bd3a5f3444b3b753f9766fded779 [2020-10-27 23:34:00,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:34:00,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:34:00,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:00,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:34:00,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:34:00,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:00" (1/1) ... [2020-10-27 23:34:00,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139426f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:00, skipping insertion in model container [2020-10-27 23:34:00,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:00" (1/1) ... [2020-10-27 23:34:00,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:34:01,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:34:02,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:02,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:34:03,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:03,308 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:34:03,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03 WrapperNode [2020-10-27 23:34:03,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:03,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:34:03,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:34:03,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:34:03,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (1/1) ... [2020-10-27 23:34:03,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:34:03,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:34:03,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:34:03,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:34:03,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (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 23:34:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:34:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:34:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:34:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:34:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:34:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:34:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:34:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:34:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:34:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:34:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:34:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:34:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:34:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:34:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:34:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:34:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:34:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:34:06,950 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:34:06,951 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:34:06,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:06 BoogieIcfgContainer [2020-10-27 23:34:06,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:34:06,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:34:06,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:34:06,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:34:06,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:34:00" (1/3) ... [2020-10-27 23:34:06,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb6b1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:06, skipping insertion in model container [2020-10-27 23:34:06,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:03" (2/3) ... [2020-10-27 23:34:06,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb6b1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:06, skipping insertion in model container [2020-10-27 23:34:06,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:06" (3/3) ... [2020-10-27 23:34:06,964 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:34:06,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:34:06,982 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:34:06,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:34:07,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:34:07,031 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:34:07,032 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:34:07,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:34:07,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:34:07,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:34:07,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:34:07,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:34:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states. [2020-10-27 23:34:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 23:34:07,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:07,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:07,102 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:07,110 INFO L82 PathProgramCache]: Analyzing trace with hash -917625237, now seen corresponding path program 1 times [2020-10-27 23:34:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:07,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399837928] [2020-10-27 23:34:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 23:34:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:34:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:34:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:34:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 23:34:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:34:14,464 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:34:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:14,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:14,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:14,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:34:14,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:34:14,741 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 23:34:14,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399837928] [2020-10-27 23:34:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:14,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402205350] [2020-10-27 23:34:14,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:14,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:14,781 INFO L87 Difference]: Start difference. First operand 914 states. Second operand 5 states. [2020-10-27 23:34:24,796 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:34:27,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:27,295 INFO L93 Difference]: Finished difference Result 2629 states and 4788 transitions. [2020-10-27 23:34:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:34:27,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 23:34:27,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:27,343 INFO L225 Difference]: With dead ends: 2629 [2020-10-27 23:34:27,343 INFO L226 Difference]: Without dead ends: 1736 [2020-10-27 23:34:27,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:34:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2020-10-27 23:34:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1684. [2020-10-27 23:34:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-10-27 23:34:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2584 transitions. [2020-10-27 23:34:27,542 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2584 transitions. Word has length 303 [2020-10-27 23:34:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:27,544 INFO L481 AbstractCegarLoop]: Abstraction has 1684 states and 2584 transitions. [2020-10-27 23:34:27,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2584 transitions. [2020-10-27 23:34:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:34:27,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:27,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:27,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:34:27,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1420511532, now seen corresponding path program 1 times [2020-10-27 23:34:27,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909764846] [2020-10-27 23:34:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:32,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:34:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:34:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 23:34:32,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:34:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 23:34:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:34:33,767 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:34:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:33,971 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 23:34:33,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909764846] [2020-10-27 23:34:33,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:33,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:33,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800555654] [2020-10-27 23:34:33,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:33,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:33,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:33,975 INFO L87 Difference]: Start difference. First operand 1684 states and 2584 transitions. Second operand 4 states. [2020-10-27 23:34:43,175 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 23:34:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:45,264 INFO L93 Difference]: Finished difference Result 4840 states and 7389 transitions. [2020-10-27 23:34:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:34:45,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-27 23:34:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:45,282 INFO L225 Difference]: With dead ends: 4840 [2020-10-27 23:34:45,282 INFO L226 Difference]: Without dead ends: 3243 [2020-10-27 23:34:45,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-27 23:34:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3179. [2020-10-27 23:34:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-27 23:34:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4837 transitions. [2020-10-27 23:34:45,432 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4837 transitions. Word has length 305 [2020-10-27 23:34:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:45,433 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4837 transitions. [2020-10-27 23:34:45,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4837 transitions. [2020-10-27 23:34:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 23:34:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:45,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:45,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:34:45,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1109498439, now seen corresponding path program 1 times [2020-10-27 23:34:45,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:45,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147989443] [2020-10-27 23:34:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:50,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 23:34:50,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:34:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 23:34:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:34:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:34:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:34:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:51,441 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:34:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:51,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:51,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:51,628 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 23:34:51,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147989443] [2020-10-27 23:34:51,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:51,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:34:51,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908314016] [2020-10-27 23:34:51,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:34:51,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:51,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:34:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:51,643 INFO L87 Difference]: Start difference. First operand 3179 states and 4837 transitions. Second operand 4 states. [2020-10-27 23:34:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:57,434 INFO L93 Difference]: Finished difference Result 9458 states and 14380 transitions. [2020-10-27 23:34:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:34:57,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-27 23:34:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:57,468 INFO L225 Difference]: With dead ends: 9458 [2020-10-27 23:34:57,468 INFO L226 Difference]: Without dead ends: 6317 [2020-10-27 23:34:57,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:34:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2020-10-27 23:34:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 3191. [2020-10-27 23:34:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-10-27 23:34:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 4854 transitions. [2020-10-27 23:34:57,690 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 4854 transitions. Word has length 305 [2020-10-27 23:34:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:57,690 INFO L481 AbstractCegarLoop]: Abstraction has 3191 states and 4854 transitions. [2020-10-27 23:34:57,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:34:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 4854 transitions. [2020-10-27 23:34:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-27 23:34:57,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:57,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:57,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:34:57,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:57,703 INFO L82 PathProgramCache]: Analyzing trace with hash 566674623, now seen corresponding path program 1 times [2020-10-27 23:34:57,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776910260] [2020-10-27 23:34:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:02,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 23:35:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:35:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:35:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:35:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 23:35:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:03,751 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:35:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:35:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:04,027 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 23:35:04,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776910260] [2020-10-27 23:35:04,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:04,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:04,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676497604] [2020-10-27 23:35:04,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:04,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:04,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:04,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:04,030 INFO L87 Difference]: Start difference. First operand 3191 states and 4854 transitions. Second operand 4 states. [2020-10-27 23:35:12,763 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 23:35:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:14,812 INFO L93 Difference]: Finished difference Result 9311 states and 14120 transitions. [2020-10-27 23:35:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:14,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-10-27 23:35:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:14,845 INFO L225 Difference]: With dead ends: 9311 [2020-10-27 23:35:14,845 INFO L226 Difference]: Without dead ends: 6257 [2020-10-27 23:35:14,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2020-10-27 23:35:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6213. [2020-10-27 23:35:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-10-27 23:35:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 9397 transitions. [2020-10-27 23:35:15,163 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 9397 transitions. Word has length 306 [2020-10-27 23:35:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:15,164 INFO L481 AbstractCegarLoop]: Abstraction has 6213 states and 9397 transitions. [2020-10-27 23:35:15,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 9397 transitions. [2020-10-27 23:35:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-27 23:35:15,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:15,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:15,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:35:15,179 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2103623042, now seen corresponding path program 1 times [2020-10-27 23:35:15,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:15,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349584865] [2020-10-27 23:35:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:20,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 23:35:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:35:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:21,243 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:35:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:21,457 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 23:35:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349584865] [2020-10-27 23:35:21,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:21,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45627697] [2020-10-27 23:35:21,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:21,469 INFO L87 Difference]: Start difference. First operand 6213 states and 9397 transitions. Second operand 5 states. [2020-10-27 23:35:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:29,330 INFO L93 Difference]: Finished difference Result 17117 states and 25677 transitions. [2020-10-27 23:35:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:29,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-27 23:35:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:29,379 INFO L225 Difference]: With dead ends: 17117 [2020-10-27 23:35:29,379 INFO L226 Difference]: Without dead ends: 11441 [2020-10-27 23:35:29,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:35:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11441 states. [2020-10-27 23:35:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11441 to 6493. [2020-10-27 23:35:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2020-10-27 23:35:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9874 transitions. [2020-10-27 23:35:29,870 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9874 transitions. Word has length 306 [2020-10-27 23:35:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:29,870 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 9874 transitions. [2020-10-27 23:35:29,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9874 transitions. [2020-10-27 23:35:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 23:35:29,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:29,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:29,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:35:29,888 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash 780962114, now seen corresponding path program 1 times [2020-10-27 23:35:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784430883] [2020-10-27 23:35:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:29,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:34,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 23:35:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:35:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:35,813 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:35:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:35,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:35:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:35,971 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 23:35:35,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784430883] [2020-10-27 23:35:35,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:35,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:35,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618845136] [2020-10-27 23:35:35,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:35,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:35,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:35,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:35,974 INFO L87 Difference]: Start difference. First operand 6493 states and 9874 transitions. Second operand 4 states. [2020-10-27 23:35:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:41,797 INFO L93 Difference]: Finished difference Result 17855 states and 26750 transitions. [2020-10-27 23:35:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:35:41,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-10-27 23:35:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:41,834 INFO L225 Difference]: With dead ends: 17855 [2020-10-27 23:35:41,834 INFO L226 Difference]: Without dead ends: 12169 [2020-10-27 23:35:41,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12169 states. [2020-10-27 23:35:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12169 to 6595. [2020-10-27 23:35:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6595 states. [2020-10-27 23:35:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6595 states to 6595 states and 10009 transitions. [2020-10-27 23:35:42,279 INFO L78 Accepts]: Start accepts. Automaton has 6595 states and 10009 transitions. Word has length 308 [2020-10-27 23:35:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:42,279 INFO L481 AbstractCegarLoop]: Abstraction has 6595 states and 10009 transitions. [2020-10-27 23:35:42,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 6595 states and 10009 transitions. [2020-10-27 23:35:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 23:35:42,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:42,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:42,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:35:42,297 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1159194241, now seen corresponding path program 1 times [2020-10-27 23:35:42,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:42,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60186624] [2020-10-27 23:35:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:47,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 23:35:47,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:35:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 23:35:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:35:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:35:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:48,285 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:35:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:48,410 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 23:35:48,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60186624] [2020-10-27 23:35:48,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:48,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:48,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443485966] [2020-10-27 23:35:48,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:48,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:48,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:48,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:48,413 INFO L87 Difference]: Start difference. First operand 6595 states and 10009 transitions. Second operand 5 states. [2020-10-27 23:35:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:54,011 INFO L93 Difference]: Finished difference Result 11517 states and 17294 transitions. [2020-10-27 23:35:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:54,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 23:35:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:54,024 INFO L225 Difference]: With dead ends: 11517 [2020-10-27 23:35:54,024 INFO L226 Difference]: Without dead ends: 5945 [2020-10-27 23:35:54,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:35:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2020-10-27 23:35:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5887. [2020-10-27 23:35:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5887 states. [2020-10-27 23:35:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 8942 transitions. [2020-10-27 23:35:54,385 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 8942 transitions. Word has length 309 [2020-10-27 23:35:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:54,385 INFO L481 AbstractCegarLoop]: Abstraction has 5887 states and 8942 transitions. [2020-10-27 23:35:54,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 8942 transitions. [2020-10-27 23:35:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 23:35:54,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:54,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:54,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:35:54,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash -474754962, now seen corresponding path program 1 times [2020-10-27 23:35:54,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:54,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86644962] [2020-10-27 23:35:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-27 23:35:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:00,565 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:36:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:00,703 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 23:36:00,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86644962] [2020-10-27 23:36:00,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:00,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:36:00,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743691981] [2020-10-27 23:36:00,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:36:00,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:00,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:36:00,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:36:00,705 INFO L87 Difference]: Start difference. First operand 5887 states and 8942 transitions. Second operand 7 states. [2020-10-27 23:36:01,689 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 23:36:10,300 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 23:36:11,176 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 23:36:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:13,346 INFO L93 Difference]: Finished difference Result 13452 states and 20500 transitions. [2020-10-27 23:36:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:36:13,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-27 23:36:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:13,370 INFO L225 Difference]: With dead ends: 13452 [2020-10-27 23:36:13,370 INFO L226 Difference]: Without dead ends: 12159 [2020-10-27 23:36:13,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:36:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12159 states. [2020-10-27 23:36:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12159 to 8998. [2020-10-27 23:36:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8998 states. [2020-10-27 23:36:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 13666 transitions. [2020-10-27 23:36:13,981 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 13666 transitions. Word has length 315 [2020-10-27 23:36:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:13,982 INFO L481 AbstractCegarLoop]: Abstraction has 8998 states and 13666 transitions. [2020-10-27 23:36:13,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:36:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 13666 transitions. [2020-10-27 23:36:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 23:36:14,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:14,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:14,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:36:14,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:14,003 INFO L82 PathProgramCache]: Analyzing trace with hash -464257897, now seen corresponding path program 1 times [2020-10-27 23:36:14,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739649219] [2020-10-27 23:36:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:19,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:19,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 23:36:19,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:36:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:36:19,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:36:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 23:36:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 23:36:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:20,480 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:36:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:20,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:20,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:20,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:36:20,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:20,770 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 23:36:20,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739649219] [2020-10-27 23:36:20,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:20,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:36:20,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280575474] [2020-10-27 23:36:20,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:36:20,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:20,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:36:20,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:36:20,773 INFO L87 Difference]: Start difference. First operand 8998 states and 13666 transitions. Second operand 12 states. [2020-10-27 23:36:22,857 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 376 DAG size of output: 370 [2020-10-27 23:37:05,213 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 35