/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:24:13,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:24:13,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:24:13,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:24:13,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:24:13,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:24:13,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:24:13,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:24:13,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:24:13,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:24:13,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:24:13,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:24:13,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:24:13,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:24:13,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:24:13,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:24:13,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:24:14,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:24:14,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:24:14,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:24:14,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:24:14,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:24:14,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:24:14,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:24:14,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:24:14,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:24:14,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:24:14,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:24:14,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:24:14,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:24:14,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:24:14,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:24:14,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:24:14,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:24:14,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:24:14,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:24:14,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:24:14,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:24:14,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:24:14,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:24:14,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:24:14,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:24:14,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:24:14,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:24:14,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:24:14,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:24:14,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:24:14,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:24:14,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:24:14,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:24:14,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:24:14,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:24:14,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:24:14,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:24:14,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:24:14,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:24:14,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:24:14,051 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:24:14,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:24:14,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:24:14,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:24:14,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:24:14,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:24:14,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:24:14,052 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:24:14,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:24:14,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:24:14,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:24:14,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:24:14,474 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:24:14,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:24:14,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ab15c6/8003e509203548e7bd30f753bca87dcd/FLAGadca975bf [2020-11-07 02:24:15,269 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:24:15,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:24:15,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ab15c6/8003e509203548e7bd30f753bca87dcd/FLAGadca975bf [2020-11-07 02:24:15,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ab15c6/8003e509203548e7bd30f753bca87dcd [2020-11-07 02:24:15,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:24:15,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:24:15,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:24:15,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:24:15,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:24:15,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:15" (1/1) ... [2020-11-07 02:24:15,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6bd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:15, skipping insertion in model container [2020-11-07 02:24:15,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:15" (1/1) ... [2020-11-07 02:24:15,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:24:15,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:24:16,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:24:16,393 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:24:16,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:24:16,665 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:24:16,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16 WrapperNode [2020-11-07 02:24:16,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:24:16,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:24:16,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:24:16,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:24:16,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... [2020-11-07 02:24:16,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:24:16,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:24:16,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:24:16,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:24:16,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-07 02:24:16,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:24:16,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:24:16,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:24:16,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:24:16,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-11-07 02:24:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-11-07 02:24:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:24:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:24:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:24:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:24:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:24:18,687 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:24:18,688 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 02:24:18,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:18 BoogieIcfgContainer [2020-11-07 02:24:18,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:24:18,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:24:18,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:24:18,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:24:18,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:15" (1/3) ... [2020-11-07 02:24:18,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e88ceb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:18, skipping insertion in model container [2020-11-07 02:24:18,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:16" (2/3) ... [2020-11-07 02:24:18,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e88ceb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:18, skipping insertion in model container [2020-11-07 02:24:18,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:18" (3/3) ... [2020-11-07 02:24:18,700 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:24:18,715 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:24:18,720 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:24:18,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:24:18,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:24:18,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:24:18,751 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:24:18,751 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:24:18,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:24:18,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:24:18,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:24:18,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:24:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states. [2020-11-07 02:24:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-11-07 02:24:18,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:18,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:18,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:18,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1022135598, now seen corresponding path program 1 times [2020-11-07 02:24:18,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:18,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203842854] [2020-11-07 02:24:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:18,928 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:20,103 WARN L194 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:20,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203842854] [2020-11-07 02:24:20,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:24:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584890815] [2020-11-07 02:24:20,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:24:20,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:20,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:24:20,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:20,568 INFO L87 Difference]: Start difference. First operand 1130 states. Second operand 4 states. [2020-11-07 02:24:24,310 WARN L194 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-11-07 02:24:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:25,034 INFO L93 Difference]: Finished difference Result 1836 states and 2386 transitions. [2020-11-07 02:24:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 02:24:25,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-11-07 02:24:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:25,074 INFO L225 Difference]: With dead ends: 1836 [2020-11-07 02:24:25,074 INFO L226 Difference]: Without dead ends: 1299 [2020-11-07 02:24:25,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:24:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-11-07 02:24:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1291. [2020-11-07 02:24:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-11-07 02:24:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1550 transitions. [2020-11-07 02:24:25,250 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1550 transitions. Word has length 423 [2020-11-07 02:24:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:25,253 INFO L481 AbstractCegarLoop]: Abstraction has 1291 states and 1550 transitions. [2020-11-07 02:24:25,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:24:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1550 transitions. [2020-11-07 02:24:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-11-07 02:24:25,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:25,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:25,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:24:25,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash 471443400, now seen corresponding path program 1 times [2020-11-07 02:24:25,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:25,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399840607] [2020-11-07 02:24:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:25,273 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:26,044 WARN L194 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:26,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399840607] [2020-11-07 02:24:26,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:26,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:24:26,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416226347] [2020-11-07 02:24:26,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:24:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:26,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:24:26,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:24:26,475 INFO L87 Difference]: Start difference. First operand 1291 states and 1550 transitions. Second operand 5 states. [2020-11-07 02:24:31,244 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-11-07 02:24:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:32,581 INFO L93 Difference]: Finished difference Result 3448 states and 4199 transitions. [2020-11-07 02:24:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:24:32,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-11-07 02:24:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:32,595 INFO L225 Difference]: With dead ends: 3448 [2020-11-07 02:24:32,596 INFO L226 Difference]: Without dead ends: 2343 [2020-11-07 02:24:32,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:24:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-11-07 02:24:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2223. [2020-11-07 02:24:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2223 states. [2020-11-07 02:24:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2704 transitions. [2020-11-07 02:24:32,752 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2704 transitions. Word has length 423 [2020-11-07 02:24:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:32,753 INFO L481 AbstractCegarLoop]: Abstraction has 2223 states and 2704 transitions. [2020-11-07 02:24:32,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:24:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2704 transitions. [2020-11-07 02:24:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-11-07 02:24:32,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:32,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:32,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:24:32,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:32,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2061758, now seen corresponding path program 1 times [2020-11-07 02:24:32,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:32,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486817942] [2020-11-07 02:24:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:32,766 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:33,145 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:33,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486817942] [2020-11-07 02:24:33,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:33,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:24:33,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52356118] [2020-11-07 02:24:33,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:24:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:33,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:24:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:33,336 INFO L87 Difference]: Start difference. First operand 2223 states and 2704 transitions. Second operand 4 states. [2020-11-07 02:24:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:37,154 INFO L93 Difference]: Finished difference Result 6258 states and 7678 transitions. [2020-11-07 02:24:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:24:37,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 424 [2020-11-07 02:24:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:37,179 INFO L225 Difference]: With dead ends: 6258 [2020-11-07 02:24:37,179 INFO L226 Difference]: Without dead ends: 4255 [2020-11-07 02:24:37,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2020-11-07 02:24:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 2225. [2020-11-07 02:24:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2020-11-07 02:24:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2706 transitions. [2020-11-07 02:24:37,383 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2706 transitions. Word has length 424 [2020-11-07 02:24:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:37,384 INFO L481 AbstractCegarLoop]: Abstraction has 2225 states and 2706 transitions. [2020-11-07 02:24:37,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:24:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2706 transitions. [2020-11-07 02:24:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-11-07 02:24:37,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:37,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:37,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:24:37,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash -614553558, now seen corresponding path program 1 times [2020-11-07 02:24:37,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:37,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637174172] [2020-11-07 02:24:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:37,403 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:37,902 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:38,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637174172] [2020-11-07 02:24:38,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:38,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:24:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739128350] [2020-11-07 02:24:38,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:24:38,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:38,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:24:38,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:24:38,136 INFO L87 Difference]: Start difference. First operand 2225 states and 2706 transitions. Second operand 5 states. [2020-11-07 02:24:42,919 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-11-07 02:24:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:44,268 INFO L93 Difference]: Finished difference Result 6127 states and 7502 transitions. [2020-11-07 02:24:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:24:44,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-11-07 02:24:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:44,288 INFO L225 Difference]: With dead ends: 6127 [2020-11-07 02:24:44,289 INFO L226 Difference]: Without dead ends: 4125 [2020-11-07 02:24:44,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:24:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2020-11-07 02:24:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 4005. [2020-11-07 02:24:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-11-07 02:24:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 4890 transitions. [2020-11-07 02:24:44,704 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 4890 transitions. Word has length 425 [2020-11-07 02:24:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:44,705 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 4890 transitions. [2020-11-07 02:24:44,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:24:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 4890 transitions. [2020-11-07 02:24:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-11-07 02:24:44,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:44,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:44,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:24:44,716 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:44,718 INFO L82 PathProgramCache]: Analyzing trace with hash 622749384, now seen corresponding path program 1 times [2020-11-07 02:24:44,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:44,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731564461] [2020-11-07 02:24:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:44,722 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:45,102 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:45,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731564461] [2020-11-07 02:24:45,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:45,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:24:45,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229793294] [2020-11-07 02:24:45,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:24:45,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:45,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:24:45,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:45,302 INFO L87 Difference]: Start difference. First operand 4005 states and 4890 transitions. Second operand 4 states. [2020-11-07 02:24:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:49,446 INFO L93 Difference]: Finished difference Result 11541 states and 14153 transitions. [2020-11-07 02:24:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:24:49,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2020-11-07 02:24:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:49,482 INFO L225 Difference]: With dead ends: 11541 [2020-11-07 02:24:49,483 INFO L226 Difference]: Without dead ends: 7779 [2020-11-07 02:24:49,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2020-11-07 02:24:49,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 4009. [2020-11-07 02:24:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-11-07 02:24:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 4894 transitions. [2020-11-07 02:24:49,987 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 4894 transitions. Word has length 426 [2020-11-07 02:24:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:49,988 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 4894 transitions. [2020-11-07 02:24:49,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:24:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 4894 transitions. [2020-11-07 02:24:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-11-07 02:24:49,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:49,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:49,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:24:49,998 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:49,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash 132057652, now seen corresponding path program 1 times [2020-11-07 02:24:49,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:50,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203916300] [2020-11-07 02:24:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:50,008 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:50,488 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:50,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:50,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203916300] [2020-11-07 02:24:50,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:50,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:24:50,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19848797] [2020-11-07 02:24:50,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:24:50,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:24:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:24:50,673 INFO L87 Difference]: Start difference. First operand 4009 states and 4894 transitions. Second operand 5 states. [2020-11-07 02:24:55,201 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-11-07 02:24:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:56,597 INFO L93 Difference]: Finished difference Result 10539 states and 12896 transitions. [2020-11-07 02:24:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:24:56,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 427 [2020-11-07 02:24:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:56,625 INFO L225 Difference]: With dead ends: 10539 [2020-11-07 02:24:56,625 INFO L226 Difference]: Without dead ends: 6779 [2020-11-07 02:24:56,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:24:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2020-11-07 02:24:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6659. [2020-11-07 02:24:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6659 states. [2020-11-07 02:24:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 8102 transitions. [2020-11-07 02:24:57,235 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 8102 transitions. Word has length 427 [2020-11-07 02:24:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:57,236 INFO L481 AbstractCegarLoop]: Abstraction has 6659 states and 8102 transitions. [2020-11-07 02:24:57,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:24:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 8102 transitions. [2020-11-07 02:24:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-11-07 02:24:57,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:57,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:57,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:24:57,250 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:57,251 INFO L82 PathProgramCache]: Analyzing trace with hash -632255190, now seen corresponding path program 1 times [2020-11-07 02:24:57,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:57,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379594413] [2020-11-07 02:24:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:57,254 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:57,609 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-11-07 02:24:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:57,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379594413] [2020-11-07 02:24:57,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:57,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:24:57,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042002721] [2020-11-07 02:24:57,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:24:57,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:24:57,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:24:57,820 INFO L87 Difference]: Start difference. First operand 6659 states and 8102 transitions. Second operand 4 states. [2020-11-07 02:25:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:02,561 INFO L93 Difference]: Finished difference Result 19041 states and 23237 transitions. [2020-11-07 02:25:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:25:02,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 428 [2020-11-07 02:25:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:02,597 INFO L225 Difference]: With dead ends: 19041 [2020-11-07 02:25:02,598 INFO L226 Difference]: Without dead ends: 12991 [2020-11-07 02:25:02,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:25:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12991 states. [2020-11-07 02:25:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12991 to 6667. [2020-11-07 02:25:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6667 states. [2020-11-07 02:25:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6667 states to 6667 states and 8110 transitions. [2020-11-07 02:25:03,331 INFO L78 Accepts]: Start accepts. Automaton has 6667 states and 8110 transitions. Word has length 428 [2020-11-07 02:25:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:03,332 INFO L481 AbstractCegarLoop]: Abstraction has 6667 states and 8110 transitions. [2020-11-07 02:25:03,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:25:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6667 states and 8110 transitions. [2020-11-07 02:25:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-11-07 02:25:03,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:03,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:03,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:25:03,346 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:03,347 INFO L82 PathProgramCache]: Analyzing trace with hash 969891814, now seen corresponding path program 1 times [2020-11-07 02:25:03,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:03,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775499668] [2020-11-07 02:25:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:03,350 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:25:03,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:25:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:25:03,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:25:03,939 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:25:03,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:25:03,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:25:03,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:25:03 BoogieIcfgContainer [2020-11-07 02:25:03,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:25:03,990 INFO L168 Benchmark]: Toolchain (without parser) took 48445.38 ms. Allocated memory was 153.1 MB in the beginning and 906.0 MB in the end (delta: 752.9 MB). Free memory was 126.5 MB in the beginning and 325.4 MB in the end (delta: -198.9 MB). Peak memory consumption was 555.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:03,991 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:25:03,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1108.27 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 128.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:03,992 INFO L168 Benchmark]: Boogie Preprocessor took 113.51 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 123.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:03,993 INFO L168 Benchmark]: RCFGBuilder took 1910.30 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 123.7 MB in the beginning and 112.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:03,994 INFO L168 Benchmark]: TraceAbstraction took 45295.84 ms. Allocated memory was 191.9 MB in the beginning and 906.0 MB in the end (delta: 714.1 MB). Free memory was 111.5 MB in the beginning and 325.4 MB in the end (delta: -213.9 MB). Peak memory consumption was 500.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:03,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1108.27 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 128.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.51 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 123.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1910.30 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 123.7 MB in the beginning and 112.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45295.84 ms. Allocated memory was 191.9 MB in the beginning and 906.0 MB in the end (delta: 714.1 MB). Free memory was 111.5 MB in the beginning and 325.4 MB in the end (delta: -213.9 MB). Peak memory consumption was 500.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1718; [L71] int __return_1846; [L72] int __return_1964; [L73] int __return_2082; [L74] int __return_2816; [L75] int __return_2785; [L76] int __return_2726; [L77] int __return_2692; [L78] int __return_2315; [L79] int __return_2587; [L80] int __return_2553; [L81] int __return_2473; [L82] int __return_2205; [L85] int main__c1; [L86] int main__i2; [L87] main__c1 = 0 [L88] ep12 = __VERIFIER_nondet_bool() [L89] ep13 = __VERIFIER_nondet_bool() [L90] ep21 = __VERIFIER_nondet_bool() [L91] ep23 = __VERIFIER_nondet_bool() [L92] ep31 = __VERIFIER_nondet_bool() [L93] ep32 = __VERIFIER_nondet_bool() [L94] id1 = __VERIFIER_nondet_char() [L95] r1 = __VERIFIER_nondet_uchar() [L96] st1 = __VERIFIER_nondet_char() [L97] nl1 = __VERIFIER_nondet_char() [L98] m1 = __VERIFIER_nondet_char() [L99] max1 = __VERIFIER_nondet_char() [L100] mode1 = __VERIFIER_nondet_bool() [L101] id2 = __VERIFIER_nondet_char() [L102] r2 = __VERIFIER_nondet_uchar() [L103] st2 = __VERIFIER_nondet_char() [L104] nl2 = __VERIFIER_nondet_char() [L105] m2 = __VERIFIER_nondet_char() [L106] max2 = __VERIFIER_nondet_char() [L107] mode2 = __VERIFIER_nondet_bool() [L108] id3 = __VERIFIER_nondet_char() [L109] r3 = __VERIFIER_nondet_uchar() [L110] st3 = __VERIFIER_nondet_char() [L111] nl3 = __VERIFIER_nondet_char() [L112] m3 = __VERIFIER_nondet_char() [L113] max3 = __VERIFIER_nondet_char() [L114] mode3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2958] COND FALSE !(!(init__r131 == 0)) [L2974] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2935] COND FALSE !(!(init__r121 == 0)) [L2951] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2912] COND FALSE !(!(init__r231 == 0)) [L2928] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2889] COND FALSE !(!(init__r211 == 0)) [L2905] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2866] COND FALSE !(!(init__r321 == 0)) [L2882] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2843] COND FALSE !(!(init__r311 == 0)) [L2859] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] init__tmp___5 = 1 [L214] __return_1718 = init__tmp___5 [L215] main__i2 = __return_1718 [L216] COND TRUE main__i2 != 0 [L218] p12_old = nomsg [L219] p12_new = nomsg [L220] p13_old = nomsg [L221] p13_new = nomsg [L222] p21_old = nomsg [L223] p21_new = nomsg [L224] p23_old = nomsg [L225] p23_new = nomsg [L226] p31_old = nomsg [L227] p31_new = nomsg [L228] p32_old = nomsg [L229] p32_new = nomsg [L230] main__i2 = 0 [L232] COND FALSE !(!(mode1 == 0)) [L238] COND TRUE ((int)r1) < 2 [L240] COND FALSE !(!(ep12 == 0)) [L251] COND FALSE !(!(ep13 == 0)) [L262] mode1 = 1 [L264] COND FALSE !(!(mode2 == 0)) [L270] COND TRUE ((int)r2) < 2 [L272] COND FALSE !(!(ep21 == 0)) [L283] COND FALSE !(!(ep23 == 0)) [L294] mode2 = 1 [L296] COND FALSE !(!(mode3 == 0)) [L302] COND TRUE ((int)r3) < 2 [L304] COND FALSE !(!(ep31 == 0)) [L315] COND FALSE !(!(ep32 == 0)) [L326] mode3 = 1 [L327] p12_old = p12_new [L328] p12_new = nomsg [L329] p13_old = p13_new [L330] p13_new = nomsg [L331] p21_old = p21_new [L332] p21_new = nomsg [L333] p23_old = p23_new [L334] p23_new = nomsg [L335] p31_old = p31_new [L336] p31_new = nomsg [L337] p32_old = p32_new [L338] p32_new = nomsg [L340] int check__tmp; [L341] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L343] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L345] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L347] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L349] COND FALSE !(((int)r1) >= 2) [L355] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L357] COND TRUE ((int)r1) < 2 [L359] COND FALSE !(((int)r1) >= 2) [L365] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L367] COND TRUE ((int)r1) < 2 [L369] check__tmp = 1 [L370] __return_1846 = check__tmp [L371] main__c1 = __return_1846 [L373] _Bool __tmp_1; [L374] __tmp_1 = main__c1 [L375] _Bool assert__arg; [L376] assert__arg = __tmp_1 [L377] COND FALSE !(assert__arg == 0) [L384] COND TRUE !(mode1 == 0) [L386] COND FALSE !(r1 == 255) [L392] r1 = r1 + 1 [L393] COND FALSE !(!(ep21 == 0)) [L401] COND FALSE !(!(ep31 == 0)) [L409] COND FALSE !(((int)r1) == 2) [L415] mode1 = 0 [L417] COND TRUE !(mode2 == 0) [L419] COND FALSE !(r2 == 255) [L425] r2 = r2 + 1 [L426] COND FALSE !(!(ep12 == 0)) [L434] COND FALSE !(!(ep32 == 0)) [L442] COND FALSE !(((int)r2) == 2) [L448] mode2 = 0 [L450] COND TRUE !(mode3 == 0) [L452] COND FALSE !(r3 == 255) [L458] r3 = r3 + 1 [L459] COND FALSE !(!(ep13 == 0)) [L467] COND FALSE !(!(ep23 == 0)) [L475] COND FALSE !(((int)r3) == 2) [L481] mode3 = 0 [L482] p12_old = p12_new [L483] p12_new = nomsg [L484] p13_old = p13_new [L485] p13_new = nomsg [L486] p21_old = p21_new [L487] p21_new = nomsg [L488] p23_old = p23_new [L489] p23_new = nomsg [L490] p31_old = p31_new [L491] p31_new = nomsg [L492] p32_old = p32_new [L493] p32_new = nomsg [L495] int check__tmp; [L496] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L498] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L500] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L502] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L504] COND FALSE !(((int)r1) >= 2) [L510] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L512] COND TRUE ((int)r1) < 2 [L514] COND FALSE !(((int)r1) >= 2) [L520] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L522] COND TRUE ((int)r1) < 2 [L524] check__tmp = 1 [L525] __return_1964 = check__tmp [L526] main__c1 = __return_1964 [L528] _Bool __tmp_2; [L529] __tmp_2 = main__c1 [L530] _Bool assert__arg; [L531] assert__arg = __tmp_2 [L532] COND FALSE !(assert__arg == 0) [L539] COND FALSE !(!(mode1 == 0)) [L545] COND TRUE ((int)r1) < 2 [L547] COND FALSE !(!(ep12 == 0)) [L558] COND FALSE !(!(ep13 == 0)) [L569] mode1 = 1 [L571] COND FALSE !(!(mode2 == 0)) [L577] COND TRUE ((int)r2) < 2 [L579] COND FALSE !(!(ep21 == 0)) [L590] COND FALSE !(!(ep23 == 0)) [L601] mode2 = 1 [L603] COND FALSE !(!(mode3 == 0)) [L609] COND TRUE ((int)r3) < 2 [L611] COND FALSE !(!(ep31 == 0)) [L622] COND FALSE !(!(ep32 == 0)) [L633] mode3 = 1 [L634] p12_old = p12_new [L635] p12_new = nomsg [L636] p13_old = p13_new [L637] p13_new = nomsg [L638] p21_old = p21_new [L639] p21_new = nomsg [L640] p23_old = p23_new [L641] p23_new = nomsg [L642] p31_old = p31_new [L643] p31_new = nomsg [L644] p32_old = p32_new [L645] p32_new = nomsg [L647] int check__tmp; [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L650] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L652] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L654] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L656] COND FALSE !(((int)r1) >= 2) [L662] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L664] COND TRUE ((int)r1) < 2 [L666] COND FALSE !(((int)r1) >= 2) [L672] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L674] COND TRUE ((int)r1) < 2 [L676] check__tmp = 1 [L677] __return_2082 = check__tmp [L678] main__c1 = __return_2082 [L680] _Bool __tmp_3; [L681] __tmp_3 = main__c1 [L682] _Bool assert__arg; [L683] assert__arg = __tmp_3 [L684] COND FALSE !(assert__arg == 0) [L691] COND TRUE !(mode1 == 0) [L693] COND FALSE !(r1 == 255) [L699] r1 = r1 + 1 [L700] COND FALSE !(!(ep21 == 0)) [L708] COND FALSE !(!(ep31 == 0)) [L716] COND TRUE ((int)r1) == 2 [L718] COND TRUE ((int)max1) == ((int)id1) [L720] st1 = 1 [L721] mode1 = 0 [L723] COND TRUE !(mode2 == 0) [L725] COND FALSE !(r2 == 255) [L731] r2 = r2 + 1 [L732] COND FALSE !(!(ep12 == 0)) [L740] COND FALSE !(!(ep32 == 0)) [L748] COND TRUE ((int)r2) == 2 [L750] COND TRUE ((int)max2) == ((int)id2) [L752] st2 = 1 [L753] mode2 = 0 [L755] COND TRUE !(mode3 == 0) [L757] COND FALSE !(r3 == 255) [L763] r3 = r3 + 1 [L764] COND FALSE !(!(ep13 == 0)) [L772] COND FALSE !(!(ep23 == 0)) [L780] COND TRUE ((int)r3) == 2 [L782] COND TRUE ((int)max3) == ((int)id3) [L784] st3 = 1 [L785] mode3 = 0 [L786] p12_old = p12_new [L787] p12_new = nomsg [L788] p13_old = p13_new [L789] p13_new = nomsg [L790] p21_old = p21_new [L791] p21_new = nomsg [L792] p23_old = p23_new [L793] p23_new = nomsg [L794] p31_old = p31_new [L795] p31_new = nomsg [L796] p32_old = p32_new [L797] p32_new = nomsg [L799] int check__tmp; [L800] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L806] check__tmp = 0 [L807] __return_2816 = check__tmp [L808] main__c1 = __return_2816 [L810] _Bool __tmp_4; [L811] __tmp_4 = main__c1 [L812] _Bool assert__arg; [L813] assert__arg = __tmp_4 [L814] COND TRUE assert__arg == 0 [L816] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1135 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10788 SDtfs, 9585 SDslu, 8108 SDs, 0 SdLazy, 11080 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6667occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 12492 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...