/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/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:44,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:44,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:44,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:01:44,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:01:44,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:01:44,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:01:44,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:01:44,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:01:44,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:01:44,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:01:44,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:01:44,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:01:44,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:01:44,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:01:44,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:01:44,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:01:44,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:01:44,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:01:44,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:01:44,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:01:44,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:01:44,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:01:44,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:01:44,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:01:44,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:01:44,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:01:44,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:01:44,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:01:44,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:01:44,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:01:44,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:01:44,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:01:44,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:44,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:44,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:44,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:01:44,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:44,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:44,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:44,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:44,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:44,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:44,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:44,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:44,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:44,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:44,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:44,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:44,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:44,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:44,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:44,850 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:44,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:44,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:44,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:44,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:44,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:44,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:44,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:45,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:45,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:45,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:45,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:45,317 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:45,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-10-23 22:01:45,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3b05577/0de1a036a0dc494fa1a6473ffcf85e6d/FLAG109dd7fae [2020-10-23 22:01:46,042 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:46,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-10-23 22:01:46,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3b05577/0de1a036a0dc494fa1a6473ffcf85e6d/FLAG109dd7fae [2020-10-23 22:01:46,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3b05577/0de1a036a0dc494fa1a6473ffcf85e6d [2020-10-23 22:01:46,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:46,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:46,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:46,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:46,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:46,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6d56d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46, skipping insertion in model container [2020-10-23 22:01:46,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:46,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:46,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:46,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:46,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:46,862 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:46,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46 WrapperNode [2020-10-23 22:01:46,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:46,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:46,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:46,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:46,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (1/1) ... [2020-10-23 22:01:46,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:46,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:46,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:46,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:46,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (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 [2020-10-23 22:01:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:47,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:47,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-23 22:01:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-23 22:01:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 22:01:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 22:01:48,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:48,956 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 22:01:48,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:48 BoogieIcfgContainer [2020-10-23 22:01:48,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:48,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:48,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:48,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:48,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:46" (1/3) ... [2020-10-23 22:01:48,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39211dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:48, skipping insertion in model container [2020-10-23 22:01:48,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:46" (2/3) ... [2020-10-23 22:01:48,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39211dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:48, skipping insertion in model container [2020-10-23 22:01:48,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:48" (3/3) ... [2020-10-23 22:01:48,970 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-10-23 22:01:48,985 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:48,992 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:49,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:49,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:49,036 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:49,037 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:49,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:49,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:49,037 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:49,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:49,037 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:49,077 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states. [2020-10-23 22:01:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-23 22:01:49,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:49,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:49,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1474853034, now seen corresponding path program 1 times [2020-10-23 22:01:49,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:49,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438065797] [2020-10-23 22:01:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:49,224 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:50,629 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:01:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:51,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438065797] [2020-10-23 22:01:51,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:51,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 22:01:51,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130214835] [2020-10-23 22:01:51,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 22:01:51,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:51,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 22:01:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:01:51,216 INFO L87 Difference]: Start difference. First operand 734 states. Second operand 14 states. [2020-10-23 22:01:51,668 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:01:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:55,167 INFO L93 Difference]: Finished difference Result 815 states and 860 transitions. [2020-10-23 22:01:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:01:55,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 494 [2020-10-23 22:01:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:55,200 INFO L225 Difference]: With dead ends: 815 [2020-10-23 22:01:55,201 INFO L226 Difference]: Without dead ends: 538 [2020-10-23 22:01:55,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-23 22:01:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-23 22:01:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 518. [2020-10-23 22:01:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 22:01:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-10-23 22:01:55,337 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 494 [2020-10-23 22:01:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:55,339 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-10-23 22:01:55,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 22:01:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-10-23 22:01:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-23 22:01:55,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:55,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:55,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:55,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1630903329, now seen corresponding path program 1 times [2020-10-23 22:01:55,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268645216] [2020-10-23 22:01:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:55,518 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:01:55,688 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:01:57,870 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:01:58,026 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:01:58,172 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:02:00,744 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:02:00,876 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:02:00,991 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:02:03,026 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:02:03,174 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:02:03,311 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:02:05,836 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:02:05,989 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:02:06,130 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:02:08,550 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:02:08,690 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:02:08,804 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:02:10,732 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:02:10,878 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:02:11,006 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:02:13,217 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:02:13,355 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:02:13,483 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:02:16,066 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:02:16,080 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:02:16,087 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:02:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:16,853 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:02:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:02:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:02:17,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268645216] [2020-10-23 22:02:17,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:02:17,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 22:02:17,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101844071] [2020-10-23 22:02:17,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 22:02:17,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:02:17,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 22:02:17,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-23 22:02:17,181 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 15 states. [2020-10-23 22:02:17,496 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:02:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:02:19,916 INFO L93 Difference]: Finished difference Result 570 states and 570 transitions. [2020-10-23 22:02:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 22:02:19,917 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 517 [2020-10-23 22:02:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:02:19,923 INFO L225 Difference]: With dead ends: 570 [2020-10-23 22:02:19,924 INFO L226 Difference]: Without dead ends: 561 [2020-10-23 22:02:19,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-23 22:02:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-23 22:02:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 541. [2020-10-23 22:02:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-23 22:02:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 541 transitions. [2020-10-23 22:02:20,003 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 541 transitions. Word has length 517 [2020-10-23 22:02:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:02:20,005 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 541 transitions. [2020-10-23 22:02:20,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 22:02:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 541 transitions. [2020-10-23 22:02:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-23 22:02:20,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:02:20,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:02:20,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:02:20,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:02:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:02:20,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1937079606, now seen corresponding path program 2 times [2020-10-23 22:02:20,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:02:20,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861652915] [2020-10-23 22:02:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:02:20,166 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:02:28,101 WARN L193 SmtUtils]: Spent 7.87 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:02:28,248 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:02:28,395 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:02:30,892 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:02:31,027 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:02:31,153 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:02:33,513 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:02:33,656 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:02:42,373 WARN L193 SmtUtils]: Spent 8.64 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:02:42,521 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:02:42,663 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-23 22:02:45,140 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-23 22:02:45,269 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:02:45,400 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:02:47,738 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:02:57,751 WARN L193 SmtUtils]: Spent 9.85 s on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2020-10-23 22:02:57,887 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:02:58,029 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:03:00,498 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:03:00,637 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:03:00,769 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:03:03,193 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:03:12,276 WARN L193 SmtUtils]: Spent 8.92 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:03:12,420 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:03:12,541 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:03:14,621 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:03:24,202 WARN L193 SmtUtils]: Spent 9.41 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:03:24,339 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:03:24,470 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:03:26,817 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:03:35,963 WARN L193 SmtUtils]: Spent 8.98 s on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-23 22:03:36,100 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:03:36,229 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:03:38,661 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:03:38,801 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:03:38,923 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:03:41,149 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:03:51,238 WARN L193 SmtUtils]: Spent 9.93 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:03:51,387 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:03:51,498 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:03:53,491 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:03:53,633 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:03:53,769 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:03:56,246 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:03:56,395 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:03:56,539 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:03:58,923 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:03:59,067 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:03:59,175 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:04:01,288 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:04:01,440 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:04:01,578 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:04:04,005 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:04:04,142 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:04:04,294 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:04:06,741 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:04:06,743 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:04:06,747 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:04:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:07,530 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:04:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:04:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:04:07,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861652915] [2020-10-23 22:04:07,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:04:07,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:04:07,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204352985] [2020-10-23 22:04:07,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:04:07,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:04:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:04:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:04:07,957 INFO L87 Difference]: Start difference. First operand 541 states and 541 transitions. Second operand 16 states. [2020-10-23 22:04:08,259 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:04:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:04:11,169 INFO L93 Difference]: Finished difference Result 593 states and 593 transitions. [2020-10-23 22:04:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 22:04:11,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 540 [2020-10-23 22:04:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:04:11,174 INFO L225 Difference]: With dead ends: 593 [2020-10-23 22:04:11,175 INFO L226 Difference]: Without dead ends: 584 [2020-10-23 22:04:11,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-23 22:04:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-10-23 22:04:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 564. [2020-10-23 22:04:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-23 22:04:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 564 transitions. [2020-10-23 22:04:11,226 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 564 transitions. Word has length 540 [2020-10-23 22:04:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:04:11,227 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 564 transitions. [2020-10-23 22:04:11,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:04:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 564 transitions. [2020-10-23 22:04:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-23 22:04:11,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:04:11,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:04:11,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:04:11,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:04:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:04:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1508233727, now seen corresponding path program 3 times [2020-10-23 22:04:11,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:04:11,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821570772] [2020-10-23 22:04:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:04:11,403 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:04:20,650 WARN L193 SmtUtils]: Spent 9.17 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:04:20,796 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:04:20,939 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:04:23,595 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:04:23,740 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:04:23,885 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:04:26,397 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:04:26,547 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:04:35,659 WARN L193 SmtUtils]: Spent 9.03 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:04:35,804 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:04:35,960 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-23 22:04:38,545 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-23 22:04:38,699 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:04:38,852 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:04:41,305 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:04:51,399 WARN L193 SmtUtils]: Spent 9.93 s on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2020-10-23 22:04:51,538 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:04:51,677 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:04:54,235 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:04:54,383 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:04:54,526 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:04:57,228 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:05:06,824 WARN L193 SmtUtils]: Spent 9.43 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:05:06,970 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:05:07,096 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:05:09,513 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:05:20,063 WARN L193 SmtUtils]: Spent 10.38 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:05:20,213 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:05:20,351 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:05:22,954 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:05:32,542 WARN L193 SmtUtils]: Spent 9.40 s on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-23 22:05:32,689 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:05:32,849 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:05:35,423 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:05:35,580 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:05:35,708 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:05:37,980 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:05:48,323 WARN L193 SmtUtils]: Spent 10.17 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:05:48,476 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:05:48,602 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:05:50,775 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:05:50,927 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:05:51,079 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:05:53,731 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:05:53,880 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:05:54,026 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:05:56,656 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:05:56,809 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:05:56,930 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:05:59,139 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:05:59,288 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:05:59,452 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:06:02,155 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:06:02,313 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:06:02,468 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:06:05,216 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:06:05,218 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:05,226 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,063 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:06:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:06:06,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821570772] [2020-10-23 22:06:06,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:06,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 22:06:06,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324906346] [2020-10-23 22:06:06,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 22:06:06,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 22:06:06,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:06:06,403 INFO L87 Difference]: Start difference. First operand 564 states and 564 transitions. Second operand 17 states. [2020-10-23 22:06:06,776 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:06:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:10,316 INFO L93 Difference]: Finished difference Result 616 states and 616 transitions. [2020-10-23 22:06:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 22:06:10,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 563 [2020-10-23 22:06:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:10,321 INFO L225 Difference]: With dead ends: 616 [2020-10-23 22:06:10,321 INFO L226 Difference]: Without dead ends: 607 [2020-10-23 22:06:10,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:06:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-10-23 22:06:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 587. [2020-10-23 22:06:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-23 22:06:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 587 transitions. [2020-10-23 22:06:10,382 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 587 transitions. Word has length 563 [2020-10-23 22:06:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:10,383 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 587 transitions. [2020-10-23 22:06:10,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 22:06:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 587 transitions. [2020-10-23 22:06:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-23 22:06:10,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:10,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:06:10,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:06:10,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:10,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1785713898, now seen corresponding path program 4 times [2020-10-23 22:06:10,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:10,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323630054] [2020-10-23 22:06:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:10,600 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:06:20,587 WARN L193 SmtUtils]: Spent 9.90 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:06:20,750 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:06:20,910 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:06:23,810 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:06:23,972 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:06:24,138 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:06:26,805 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:06:26,964 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:06:37,235 WARN L193 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:06:37,396 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:06:37,550 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-23 22:06:40,527 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-23 22:06:40,688 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:06:40,854 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:06:43,704 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:06:43,889 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 22:06:54,950 WARN L193 SmtUtils]: Spent 11.06 s on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2020-10-23 22:06:55,117 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:06:55,273 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:06:58,153 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:06:58,316 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:06:58,478 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:07:01,286 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:07:12,363 WARN L193 SmtUtils]: Spent 10.90 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:07:12,535 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:07:12,681 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:07:15,401 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:07:15,610 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 22:07:27,570 WARN L193 SmtUtils]: Spent 11.96 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:07:27,752 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:07:27,916 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:07:30,973 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:07:41,952 WARN L193 SmtUtils]: Spent 10.80 s on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-23 22:07:42,120 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:07:42,290 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:07:45,207 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:07:45,378 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:07:45,523 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:07:48,100 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:07:59,884 WARN L193 SmtUtils]: Spent 11.59 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:08:00,050 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:08:00,190 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:08:02,633 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:08:02,812 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:08:03,015 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:08:05,989 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:08:06,166 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:08:06,344 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:08:09,329 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:08:09,501 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:08:09,642 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:08:12,166 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:08:12,344 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:08:12,523 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:08:15,623 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:08:15,791 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:08:15,960 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:08:18,936 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:08:18,939 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:08:18,941 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:19,901 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:08:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:20,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323630054] [2020-10-23 22:08:20,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:20,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-23 22:08:20,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057490253] [2020-10-23 22:08:20,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 22:08:20,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:20,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 22:08:20,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:08:20,321 INFO L87 Difference]: Start difference. First operand 587 states and 587 transitions. Second operand 18 states. [2020-10-23 22:08:20,725 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:08:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:25,355 INFO L93 Difference]: Finished difference Result 639 states and 639 transitions. [2020-10-23 22:08:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:08:25,357 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 586 [2020-10-23 22:08:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:25,362 INFO L225 Difference]: With dead ends: 639 [2020-10-23 22:08:25,363 INFO L226 Difference]: Without dead ends: 630 [2020-10-23 22:08:25,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 22:08:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-23 22:08:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 610. [2020-10-23 22:08:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-10-23 22:08:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 610 transitions. [2020-10-23 22:08:25,421 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 610 transitions. Word has length 586 [2020-10-23 22:08:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:25,423 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 610 transitions. [2020-10-23 22:08:25,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 22:08:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 610 transitions. [2020-10-23 22:08:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-23 22:08:25,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:25,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:08:25,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:08:25,441 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash 158697503, now seen corresponding path program 5 times [2020-10-23 22:08:25,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:25,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311370626] [2020-10-23 22:08:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:25,673 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:08:36,904 WARN L193 SmtUtils]: Spent 11.13 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:08:37,095 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:08:37,284 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:08:40,497 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:08:40,682 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:08:40,863 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:08:44,066 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:08:44,255 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:08:44,369 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-23 22:08:56,543 WARN L193 SmtUtils]: Spent 12.17 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:08:56,732 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:08:56,914 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-23 22:09:00,242 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-23 22:09:00,424 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:09:00,610 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:09:03,913 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:09:04,022 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-23 22:09:04,143 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 22:09:17,493 WARN L193 SmtUtils]: Spent 13.35 s on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2020-10-23 22:09:17,692 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:09:17,879 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:09:21,269 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:09:21,464 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:09:21,670 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:09:25,231 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:09:25,338 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-23 22:09:25,455 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-23 22:09:38,561 WARN L193 SmtUtils]: Spent 13.10 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:09:38,758 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:09:38,945 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:09:41,879 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:09:41,988 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:09:42,106 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 22:09:55,494 WARN L193 SmtUtils]: Spent 13.39 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:09:55,699 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:09:55,895 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:09:59,381 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:09:59,490 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:09:59,603 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-23 22:10:12,877 WARN L193 SmtUtils]: Spent 13.27 s on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-23 22:10:13,098 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:10:13,303 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:10:17,144 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:10:17,356 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:10:17,557 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:10:20,956 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:10:21,065 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:10:21,207 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 22:10:37,184 WARN L193 SmtUtils]: Spent 15.97 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:10:37,401 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:10:37,569 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:10:40,945 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:10:41,167 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:10:41,399 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:10:45,427 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:10:45,649 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:10:45,868 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:10:49,750 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:10:49,982 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:10:50,160 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:10:53,445 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:10:53,670 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:10:53,888 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:10:57,825 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:10:58,063 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:10:58,299 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:11:02,275 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:11:02,278 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:11:02,281 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:11:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:03,769 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:11:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:11:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:11:04,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311370626] [2020-10-23 22:11:04,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:11:04,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-23 22:11:04,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069630018] [2020-10-23 22:11:04,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 22:11:04,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:11:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 22:11:04,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:11:04,299 INFO L87 Difference]: Start difference. First operand 610 states and 610 transitions. Second operand 19 states. [2020-10-23 22:11:04,823 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:11:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:11:12,314 INFO L93 Difference]: Finished difference Result 662 states and 662 transitions. [2020-10-23 22:11:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 22:11:12,318 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 609 [2020-10-23 22:11:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:11:12,329 INFO L225 Difference]: With dead ends: 662 [2020-10-23 22:11:12,329 INFO L226 Difference]: Without dead ends: 653 [2020-10-23 22:11:12,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 22:11:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-23 22:11:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 633. [2020-10-23 22:11:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-23 22:11:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 633 transitions. [2020-10-23 22:11:12,427 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 633 transitions. Word has length 609 [2020-10-23 22:11:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:11:12,429 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 633 transitions. [2020-10-23 22:11:12,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 22:11:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 633 transitions. [2020-10-23 22:11:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-23 22:11:12,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:11:12,436 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:11:12,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:11:12,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:11:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:11:12,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1894093046, now seen corresponding path program 6 times [2020-10-23 22:11:12,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:11:12,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593995663] [2020-10-23 22:11:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:11:12,786 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:11:12,913 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-23 22:11:27,751 WARN L193 SmtUtils]: Spent 14.83 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:11:27,986 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:11:28,240 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:11:32,847 WARN L193 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:11:33,090 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:11:33,334 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:11:37,769 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:11:38,026 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:11:38,240 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-23 22:11:55,070 WARN L193 SmtUtils]: Spent 16.83 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:11:55,318 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:11:55,568 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-23 22:12:00,282 WARN L193 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-23 22:12:00,539 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:12:00,791 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-23 22:12:05,206 WARN L193 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-23 22:12:05,348 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-23 22:12:05,524 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 22:12:23,998 WARN L193 SmtUtils]: Spent 18.47 s on a formula simplification. DAG size of input: 238 DAG size of output: 235 [2020-10-23 22:12:24,265 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:12:24,524 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:12:29,106 WARN L193 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:12:29,377 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:12:29,633 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-23 22:12:34,741 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-23 22:12:34,897 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-23 22:12:35,062 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-23 22:12:52,783 WARN L193 SmtUtils]: Spent 17.72 s on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2020-10-23 22:12:53,074 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 22:12:53,331 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-23 22:12:58,044 WARN L193 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-10-23 22:12:58,198 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:12:58,367 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 22:13:18,088 WARN L193 SmtUtils]: Spent 19.71 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:13:18,386 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:13:18,651 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-23 22:13:23,597 WARN L193 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-23 22:13:23,744 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:13:23,911 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-23 22:13:42,763 WARN L193 SmtUtils]: Spent 18.85 s on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-23 22:13:43,060 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:13:43,343 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:13:48,506 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:13:48,810 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:13:49,059 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-23 22:13:53,536 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-10-23 22:13:53,704 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-23 22:13:53,863 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 22:14:11,954 WARN L193 SmtUtils]: Spent 18.09 s on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2020-10-23 22:14:12,176 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:14:12,373 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:14:15,831 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:14:16,062 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:14:16,289 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:14:20,361 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:14:20,616 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:14:20,839 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:14:24,918 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:14:25,144 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 22:14:25,342 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:14:29,043 WARN L193 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-23 22:14:29,279 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:14:29,528 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:14:33,646 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:14:33,901 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-23 22:14:34,136 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-23 22:14:38,325 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:14:38,328 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:14:38,331 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:14:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:14:40,025 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 22:14:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:14:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:14:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:14:40,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593995663] [2020-10-23 22:14:40,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:14:40,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 22:14:40,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307461473] [2020-10-23 22:14:40,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 22:14:40,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:14:40,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 22:14:40,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-23 22:14:40,478 INFO L87 Difference]: Start difference. First operand 633 states and 633 transitions. Second operand 20 states. [2020-10-23 22:14:41,003 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-23 22:14:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:14:49,880 INFO L93 Difference]: Finished difference Result 685 states and 685 transitions. [2020-10-23 22:14:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 22:14:49,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 632 [2020-10-23 22:14:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:14:49,895 INFO L225 Difference]: With dead ends: 685 [2020-10-23 22:14:49,895 INFO L226 Difference]: Without dead ends: 676 [2020-10-23 22:14:49,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 22:14:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-23 22:14:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 656. [2020-10-23 22:14:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-23 22:14:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 656 transitions. [2020-10-23 22:14:49,962 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 656 transitions. Word has length 632 [2020-10-23 22:14:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:14:49,964 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 656 transitions. [2020-10-23 22:14:49,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 22:14:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 656 transitions. [2020-10-23 22:14:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2020-10-23 22:14:49,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:14:49,971 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:14:49,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:14:49,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:14:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:14:49,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1564182079, now seen corresponding path program 7 times [2020-10-23 22:14:49,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:14:49,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196514541] [2020-10-23 22:14:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:14:50,286 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-23 22:14:50,422 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-23 22:15:05,429 WARN L193 SmtUtils]: Spent 15.00 s on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2020-10-23 22:15:05,679 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:15:05,932 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-23 22:15:10,519 WARN L193 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-23 22:15:10,796 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-23 22:15:11,056 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55