/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-86f66a4 [2020-07-07 14:03:56,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:03:56,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:03:56,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:03:56,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:03:56,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:03:56,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:03:56,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:03:56,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:03:56,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:03:56,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:03:56,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:03:56,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:03:56,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:03:56,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:03:56,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:03:56,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:03:56,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:03:56,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:03:56,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:03:56,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:03:56,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:03:56,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:03:56,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:03:56,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 14:03:56,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 14:03:56,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 14:03:56,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 14:03:56,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 14:03:56,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 14:03:56,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 14:03:56,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 14:03:56,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 14:03:56,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 14:03:56,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 14:03:56,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 14:03:56,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 14:03:56,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 14:03:56,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:03:56,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:03:56,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:03:56,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:03:56,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:03:56,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:03:56,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:03:56,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:03:56,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:03:56,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:03:56,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:03:56,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:03:56,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:03:56,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:03:56,870 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:03:56,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:03:56,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:03:56,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:03:56,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:03:56,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:03:56,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:03:56,871 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:03:57,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:03:57,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:03:57,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:03:57,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:03:57,175 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:03:57,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-07-07 14:03:57,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097264de5/03888f431597476f93bba054377f084a/FLAG8cd0fbdf3 [2020-07-07 14:03:57,783 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:03:57,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-07-07 14:03:57,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097264de5/03888f431597476f93bba054377f084a/FLAG8cd0fbdf3 [2020-07-07 14:03:58,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097264de5/03888f431597476f93bba054377f084a [2020-07-07 14:03:58,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:03:58,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:03:58,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:03:58,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:03:58,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:03:58,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a262e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58, skipping insertion in model container [2020-07-07 14:03:58,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:03:58,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:03:58,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:03:58,575 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:03:58,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:03:58,703 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:03:58,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58 WrapperNode [2020-07-07 14:03:58,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:03:58,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:03:58,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:03:58,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:03:58,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (1/1) ... [2020-07-07 14:03:58,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:03:58,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:03:58,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:03:58,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:03:58,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (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 [2020-07-07 14:03:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:03:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:03:58,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:03:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:03:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-07 14:03:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-07 14:03:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:03:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:03:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 14:03:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 14:03:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 14:03:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 14:03:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 14:03:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:03:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:03:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 14:03:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 14:04:00,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:04:00,462 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 14:04:00,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:04:00 BoogieIcfgContainer [2020-07-07 14:04:00,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:04:00,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:04:00,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:04:00,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:04:00,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:03:58" (1/3) ... [2020-07-07 14:04:00,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8cfa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:04:00, skipping insertion in model container [2020-07-07 14:04:00,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:03:58" (2/3) ... [2020-07-07 14:04:00,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8cfa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:04:00, skipping insertion in model container [2020-07-07 14:04:00,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:04:00" (3/3) ... [2020-07-07 14:04:00,480 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-07-07 14:04:00,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:04:00,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:04:00,516 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:04:00,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:04:00,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:04:00,541 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:04:00,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:04:00,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:04:00,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:04:00,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:04:00,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:04:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2020-07-07 14:04:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-07 14:04:00,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:00,603 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] [2020-07-07 14:04:00,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:00,611 INFO L82 PathProgramCache]: Analyzing trace with hash -378957588, now seen corresponding path program 1 times [2020-07-07 14:04:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:00,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755590555] [2020-07-07 14:04:00,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:02,391 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:04:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:02,894 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:02,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755590555] [2020-07-07 14:04:02,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:02,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:04:02,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208637210] [2020-07-07 14:04:02,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:04:02,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:02,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:04:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:04:02,939 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 14 states. [2020-07-07 14:04:03,385 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:06,051 INFO L93 Difference]: Finished difference Result 806 states and 850 transitions. [2020-07-07 14:04:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 14:04:06,054 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 488 [2020-07-07 14:04:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:06,099 INFO L225 Difference]: With dead ends: 806 [2020-07-07 14:04:06,099 INFO L226 Difference]: Without dead ends: 532 [2020-07-07 14:04:06,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-07-07 14:04:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-07-07 14:04:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 512. [2020-07-07 14:04:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-07-07 14:04:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 512 transitions. [2020-07-07 14:04:06,248 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 512 transitions. Word has length 488 [2020-07-07 14:04:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:06,249 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 512 transitions. [2020-07-07 14:04:06,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:04:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 512 transitions. [2020-07-07 14:04:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-07-07 14:04:06,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:06,265 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] [2020-07-07 14:04:06,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:04:06,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1127244588, now seen corresponding path program 1 times [2020-07-07 14:04:06,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:06,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440945648] [2020-07-07 14:04:06,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:07,224 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:04:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:07,869 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:07,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440945648] [2020-07-07 14:04:07,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:07,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 14:04:07,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767494220] [2020-07-07 14:04:07,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 14:04:07,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:07,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 14:04:07,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-07-07 14:04:07,874 INFO L87 Difference]: Start difference. First operand 512 states and 512 transitions. Second operand 15 states. [2020-07-07 14:04:08,147 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:10,260 INFO L93 Difference]: Finished difference Result 563 states and 563 transitions. [2020-07-07 14:04:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 14:04:10,261 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 511 [2020-07-07 14:04:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:10,271 INFO L225 Difference]: With dead ends: 563 [2020-07-07 14:04:10,271 INFO L226 Difference]: Without dead ends: 555 [2020-07-07 14:04:10,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:04:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-07-07 14:04:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 535. [2020-07-07 14:04:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-07-07 14:04:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 535 transitions. [2020-07-07 14:04:10,365 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 535 transitions. Word has length 511 [2020-07-07 14:04:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:10,366 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 535 transitions. [2020-07-07 14:04:10,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 14:04:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 535 transitions. [2020-07-07 14:04:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-07-07 14:04:10,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:10,379 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] [2020-07-07 14:04:10,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:04:10,380 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash -382293012, now seen corresponding path program 2 times [2020-07-07 14:04:10,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:10,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545581185] [2020-07-07 14:04:10,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:11,682 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:11,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545581185] [2020-07-07 14:04:11,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:11,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 14:04:11,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607161859] [2020-07-07 14:04:11,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 14:04:11,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 14:04:11,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-07-07 14:04:11,690 INFO L87 Difference]: Start difference. First operand 535 states and 535 transitions. Second operand 16 states. [2020-07-07 14:04:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:14,184 INFO L93 Difference]: Finished difference Result 586 states and 586 transitions. [2020-07-07 14:04:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 14:04:14,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 534 [2020-07-07 14:04:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:14,196 INFO L225 Difference]: With dead ends: 586 [2020-07-07 14:04:14,196 INFO L226 Difference]: Without dead ends: 578 [2020-07-07 14:04:14,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-07-07 14:04:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-07-07 14:04:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 558. [2020-07-07 14:04:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-07-07 14:04:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 558 transitions. [2020-07-07 14:04:14,274 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 558 transitions. Word has length 534 [2020-07-07 14:04:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:14,275 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 558 transitions. [2020-07-07 14:04:14,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 14:04:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 558 transitions. [2020-07-07 14:04:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-07-07 14:04:14,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:14,294 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] [2020-07-07 14:04:14,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:04:14,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1886659028, now seen corresponding path program 3 times [2020-07-07 14:04:14,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:14,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731397314] [2020-07-07 14:04:14,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:15,453 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:15,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731397314] [2020-07-07 14:04:15,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:15,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 14:04:15,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682719196] [2020-07-07 14:04:15,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 14:04:15,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:15,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 14:04:15,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-07-07 14:04:15,456 INFO L87 Difference]: Start difference. First operand 558 states and 558 transitions. Second operand 17 states. [2020-07-07 14:04:15,652 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:18,245 INFO L93 Difference]: Finished difference Result 609 states and 609 transitions. [2020-07-07 14:04:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 14:04:18,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 557 [2020-07-07 14:04:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:18,256 INFO L225 Difference]: With dead ends: 609 [2020-07-07 14:04:18,257 INFO L226 Difference]: Without dead ends: 601 [2020-07-07 14:04:18,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:04:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-07-07 14:04:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2020-07-07 14:04:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-07-07 14:04:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-07-07 14:04:18,357 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 557 [2020-07-07 14:04:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:18,359 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-07-07 14:04:18,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 14:04:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-07-07 14:04:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-07-07 14:04:18,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:18,365 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] [2020-07-07 14:04:18,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:04:18,365 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 743212780, now seen corresponding path program 4 times [2020-07-07 14:04:18,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:18,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101201260] [2020-07-07 14:04:18,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:19,497 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:19,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101201260] [2020-07-07 14:04:19,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:19,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 14:04:19,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446901969] [2020-07-07 14:04:19,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 14:04:19,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:19,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 14:04:19,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-07-07 14:04:19,500 INFO L87 Difference]: Start difference. First operand 581 states and 581 transitions. Second operand 18 states. [2020-07-07 14:04:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:22,445 INFO L93 Difference]: Finished difference Result 632 states and 632 transitions. [2020-07-07 14:04:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 14:04:22,453 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 580 [2020-07-07 14:04:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:22,458 INFO L225 Difference]: With dead ends: 632 [2020-07-07 14:04:22,458 INFO L226 Difference]: Without dead ends: 624 [2020-07-07 14:04:22,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:04:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-07-07 14:04:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 604. [2020-07-07 14:04:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-07-07 14:04:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 604 transitions. [2020-07-07 14:04:22,534 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 604 transitions. Word has length 580 [2020-07-07 14:04:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:22,535 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 604 transitions. [2020-07-07 14:04:22,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 14:04:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 604 transitions. [2020-07-07 14:04:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-07-07 14:04:22,540 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:22,541 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] [2020-07-07 14:04:22,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:04:22,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:22,542 INFO L82 PathProgramCache]: Analyzing trace with hash -621287724, now seen corresponding path program 5 times [2020-07-07 14:04:22,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:22,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147002078] [2020-07-07 14:04:22,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:23,722 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:23,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147002078] [2020-07-07 14:04:23,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:23,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-07 14:04:23,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700003662] [2020-07-07 14:04:23,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 14:04:23,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 14:04:23,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-07-07 14:04:23,725 INFO L87 Difference]: Start difference. First operand 604 states and 604 transitions. Second operand 19 states. [2020-07-07 14:04:23,932 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:26,942 INFO L93 Difference]: Finished difference Result 655 states and 655 transitions. [2020-07-07 14:04:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 14:04:26,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 603 [2020-07-07 14:04:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:26,948 INFO L225 Difference]: With dead ends: 655 [2020-07-07 14:04:26,949 INFO L226 Difference]: Without dead ends: 647 [2020-07-07 14:04:26,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 14:04:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-07-07 14:04:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 627. [2020-07-07 14:04:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-07-07 14:04:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 627 transitions. [2020-07-07 14:04:27,058 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 627 transitions. Word has length 603 [2020-07-07 14:04:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:27,060 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 627 transitions. [2020-07-07 14:04:27,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 14:04:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 627 transitions. [2020-07-07 14:04:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-07-07 14:04:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:27,067 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] [2020-07-07 14:04:27,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:04:27,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:27,068 INFO L82 PathProgramCache]: Analyzing trace with hash -782556692, now seen corresponding path program 6 times [2020-07-07 14:04:27,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:27,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066673044] [2020-07-07 14:04:27,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:28,365 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:28,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066673044] [2020-07-07 14:04:28,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:28,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-07 14:04:28,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945372358] [2020-07-07 14:04:28,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 14:04:28,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 14:04:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-07-07 14:04:28,368 INFO L87 Difference]: Start difference. First operand 627 states and 627 transitions. Second operand 20 states. [2020-07-07 14:04:28,583 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:31,816 INFO L93 Difference]: Finished difference Result 678 states and 678 transitions. [2020-07-07 14:04:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 14:04:31,817 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 626 [2020-07-07 14:04:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:31,823 INFO L225 Difference]: With dead ends: 678 [2020-07-07 14:04:31,823 INFO L226 Difference]: Without dead ends: 670 [2020-07-07 14:04:31,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 14:04:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-07-07 14:04:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 650. [2020-07-07 14:04:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-07-07 14:04:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 650 transitions. [2020-07-07 14:04:31,910 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 650 transitions. Word has length 626 [2020-07-07 14:04:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:31,910 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 650 transitions. [2020-07-07 14:04:31,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 14:04:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 650 transitions. [2020-07-07 14:04:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-07-07 14:04:31,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:31,916 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] [2020-07-07 14:04:31,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:04:31,917 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1470819284, now seen corresponding path program 7 times [2020-07-07 14:04:31,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:31,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198237071] [2020-07-07 14:04:31,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:33,281 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:33,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198237071] [2020-07-07 14:04:33,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:33,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-07 14:04:33,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938292749] [2020-07-07 14:04:33,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 14:04:33,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 14:04:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:04:33,284 INFO L87 Difference]: Start difference. First operand 650 states and 650 transitions. Second operand 21 states. [2020-07-07 14:04:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:36,973 INFO L93 Difference]: Finished difference Result 701 states and 701 transitions. [2020-07-07 14:04:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 14:04:36,973 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 649 [2020-07-07 14:04:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:36,978 INFO L225 Difference]: With dead ends: 701 [2020-07-07 14:04:36,978 INFO L226 Difference]: Without dead ends: 693 [2020-07-07 14:04:36,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 14:04:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-07 14:04:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 673. [2020-07-07 14:04:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-07-07 14:04:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 673 transitions. [2020-07-07 14:04:37,072 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 673 transitions. Word has length 649 [2020-07-07 14:04:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:37,073 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 673 transitions. [2020-07-07 14:04:37,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 14:04:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 673 transitions. [2020-07-07 14:04:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-07-07 14:04:37,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:37,077 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:37,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:04:37,077 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:37,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1022198548, now seen corresponding path program 8 times [2020-07-07 14:04:37,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:37,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941375849] [2020-07-07 14:04:37,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:38,598 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:38,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941375849] [2020-07-07 14:04:38,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:38,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-07 14:04:38,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650397611] [2020-07-07 14:04:38,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 14:04:38,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:38,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 14:04:38,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-07-07 14:04:38,601 INFO L87 Difference]: Start difference. First operand 673 states and 673 transitions. Second operand 22 states. [2020-07-07 14:04:38,821 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:42,561 INFO L93 Difference]: Finished difference Result 724 states and 724 transitions. [2020-07-07 14:04:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 14:04:42,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 672 [2020-07-07 14:04:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:42,566 INFO L225 Difference]: With dead ends: 724 [2020-07-07 14:04:42,567 INFO L226 Difference]: Without dead ends: 716 [2020-07-07 14:04:42,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 14:04:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-07-07 14:04:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 696. [2020-07-07 14:04:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-07-07 14:04:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 696 transitions. [2020-07-07 14:04:42,741 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 696 transitions. Word has length 672 [2020-07-07 14:04:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:42,745 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 696 transitions. [2020-07-07 14:04:42,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 14:04:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 696 transitions. [2020-07-07 14:04:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-07-07 14:04:42,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:42,754 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:42,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:04:42,755 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:42,755 INFO L82 PathProgramCache]: Analyzing trace with hash -170053420, now seen corresponding path program 9 times [2020-07-07 14:04:42,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:42,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676518237] [2020-07-07 14:04:42,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:44,599 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:44,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676518237] [2020-07-07 14:04:44,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:44,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-07 14:04:44,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849791004] [2020-07-07 14:04:44,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-07 14:04:44,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:44,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-07 14:04:44,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-07-07 14:04:44,601 INFO L87 Difference]: Start difference. First operand 696 states and 696 transitions. Second operand 23 states. [2020-07-07 14:04:44,809 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:48,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:48,751 INFO L93 Difference]: Finished difference Result 747 states and 747 transitions. [2020-07-07 14:04:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:04:48,752 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 695 [2020-07-07 14:04:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:48,757 INFO L225 Difference]: With dead ends: 747 [2020-07-07 14:04:48,757 INFO L226 Difference]: Without dead ends: 739 [2020-07-07 14:04:48,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 14:04:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-07-07 14:04:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 719. [2020-07-07 14:04:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-07-07 14:04:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 719 transitions. [2020-07-07 14:04:48,916 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 719 transitions. Word has length 695 [2020-07-07 14:04:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:48,917 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 719 transitions. [2020-07-07 14:04:48,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-07 14:04:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 719 transitions. [2020-07-07 14:04:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2020-07-07 14:04:48,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:48,925 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:48,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:04:48,926 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1205692436, now seen corresponding path program 10 times [2020-07-07 14:04:48,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:48,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600942522] [2020-07-07 14:04:48,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:50,340 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:04:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:51,220 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:51,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600942522] [2020-07-07 14:04:51,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:51,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-07 14:04:51,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264302301] [2020-07-07 14:04:51,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 14:04:51,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:51,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 14:04:51,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-07-07 14:04:51,223 INFO L87 Difference]: Start difference. First operand 719 states and 719 transitions. Second operand 24 states. [2020-07-07 14:04:51,441 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:04:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:55,910 INFO L93 Difference]: Finished difference Result 770 states and 770 transitions. [2020-07-07 14:04:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 14:04:55,911 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 718 [2020-07-07 14:04:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:55,915 INFO L225 Difference]: With dead ends: 770 [2020-07-07 14:04:55,915 INFO L226 Difference]: Without dead ends: 762 [2020-07-07 14:04:55,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 14:04:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-07-07 14:04:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 742. [2020-07-07 14:04:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-07-07 14:04:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 742 transitions. [2020-07-07 14:04:56,040 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 742 transitions. Word has length 718 [2020-07-07 14:04:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:56,041 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 742 transitions. [2020-07-07 14:04:56,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 14:04:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 742 transitions. [2020-07-07 14:04:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-07-07 14:04:56,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:56,048 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:56,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:04:56,048 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:56,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2027861460, now seen corresponding path program 11 times [2020-07-07 14:04:56,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:56,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425772072] [2020-07-07 14:04:56,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:57,913 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:57,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425772072] [2020-07-07 14:04:57,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:57,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-07 14:04:57,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98914427] [2020-07-07 14:04:57,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 14:04:57,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 14:04:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-07-07 14:04:57,916 INFO L87 Difference]: Start difference. First operand 742 states and 742 transitions. Second operand 25 states. [2020-07-07 14:04:58,131 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:02,962 INFO L93 Difference]: Finished difference Result 793 states and 793 transitions. [2020-07-07 14:05:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:05:02,962 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 741 [2020-07-07 14:05:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:02,967 INFO L225 Difference]: With dead ends: 793 [2020-07-07 14:05:02,967 INFO L226 Difference]: Without dead ends: 785 [2020-07-07 14:05:02,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 14:05:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-07-07 14:05:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 765. [2020-07-07 14:05:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-07-07 14:05:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 765 transitions. [2020-07-07 14:05:03,125 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 765 transitions. Word has length 741 [2020-07-07 14:05:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:03,126 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 765 transitions. [2020-07-07 14:05:03,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 14:05:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 765 transitions. [2020-07-07 14:05:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2020-07-07 14:05:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:03,137 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:03,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 14:05:03,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash 859534060, now seen corresponding path program 12 times [2020-07-07 14:05:03,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:03,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545919103] [2020-07-07 14:05:03,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:05,114 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:05,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545919103] [2020-07-07 14:05:05,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:05,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-07 14:05:05,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665915575] [2020-07-07 14:05:05,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 14:05:05,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:05,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 14:05:05,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-07-07 14:05:05,117 INFO L87 Difference]: Start difference. First operand 765 states and 765 transitions. Second operand 26 states. [2020-07-07 14:05:05,364 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:10,552 INFO L93 Difference]: Finished difference Result 816 states and 816 transitions. [2020-07-07 14:05:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 14:05:10,552 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 764 [2020-07-07 14:05:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:10,556 INFO L225 Difference]: With dead ends: 816 [2020-07-07 14:05:10,557 INFO L226 Difference]: Without dead ends: 808 [2020-07-07 14:05:10,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 14:05:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-07-07 14:05:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 788. [2020-07-07 14:05:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-07-07 14:05:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 788 transitions. [2020-07-07 14:05:10,692 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 788 transitions. Word has length 764 [2020-07-07 14:05:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:10,693 INFO L479 AbstractCegarLoop]: Abstraction has 788 states and 788 transitions. [2020-07-07 14:05:10,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 14:05:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 788 transitions. [2020-07-07 14:05:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-07-07 14:05:10,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:10,700 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:10,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 14:05:10,700 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1476360916, now seen corresponding path program 13 times [2020-07-07 14:05:10,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:10,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999958857] [2020-07-07 14:05:10,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:12,754 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:12,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999958857] [2020-07-07 14:05:12,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:12,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-07 14:05:12,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087651345] [2020-07-07 14:05:12,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-07 14:05:12,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:12,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-07 14:05:12,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:05:12,757 INFO L87 Difference]: Start difference. First operand 788 states and 788 transitions. Second operand 27 states. [2020-07-07 14:05:12,994 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:18,522 INFO L93 Difference]: Finished difference Result 839 states and 839 transitions. [2020-07-07 14:05:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 14:05:18,523 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 787 [2020-07-07 14:05:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:18,527 INFO L225 Difference]: With dead ends: 839 [2020-07-07 14:05:18,527 INFO L226 Difference]: Without dead ends: 831 [2020-07-07 14:05:18,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 14:05:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-07-07 14:05:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 811. [2020-07-07 14:05:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-07-07 14:05:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 811 transitions. [2020-07-07 14:05:18,711 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 811 transitions. Word has length 787 [2020-07-07 14:05:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:18,712 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 811 transitions. [2020-07-07 14:05:18,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-07 14:05:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 811 transitions. [2020-07-07 14:05:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-07-07 14:05:18,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:18,720 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:18,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 14:05:18,720 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:18,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:18,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2096296468, now seen corresponding path program 14 times [2020-07-07 14:05:18,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:18,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379488719] [2020-07-07 14:05:18,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:20,883 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:20,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379488719] [2020-07-07 14:05:20,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:20,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-07-07 14:05:20,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495790074] [2020-07-07 14:05:20,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 14:05:20,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 14:05:20,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:05:20,885 INFO L87 Difference]: Start difference. First operand 811 states and 811 transitions. Second operand 28 states. [2020-07-07 14:05:21,118 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:26,956 INFO L93 Difference]: Finished difference Result 862 states and 862 transitions. [2020-07-07 14:05:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 14:05:26,957 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 810 [2020-07-07 14:05:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:26,961 INFO L225 Difference]: With dead ends: 862 [2020-07-07 14:05:26,961 INFO L226 Difference]: Without dead ends: 854 [2020-07-07 14:05:26,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 14:05:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-07-07 14:05:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 834. [2020-07-07 14:05:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-07-07 14:05:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 834 transitions. [2020-07-07 14:05:27,102 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 834 transitions. Word has length 810 [2020-07-07 14:05:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:27,103 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 834 transitions. [2020-07-07 14:05:27,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 14:05:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 834 transitions. [2020-07-07 14:05:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-07-07 14:05:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:27,109 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:27,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 14:05:27,109 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1097891884, now seen corresponding path program 15 times [2020-07-07 14:05:27,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:27,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639226262] [2020-07-07 14:05:27,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:29,343 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:29,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639226262] [2020-07-07 14:05:29,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:29,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-07-07 14:05:29,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447028739] [2020-07-07 14:05:29,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 14:05:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 14:05:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-07-07 14:05:29,346 INFO L87 Difference]: Start difference. First operand 834 states and 834 transitions. Second operand 29 states. [2020-07-07 14:05:29,587 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:35,881 INFO L93 Difference]: Finished difference Result 885 states and 885 transitions. [2020-07-07 14:05:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 14:05:35,882 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 833 [2020-07-07 14:05:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:35,886 INFO L225 Difference]: With dead ends: 885 [2020-07-07 14:05:35,886 INFO L226 Difference]: Without dead ends: 877 [2020-07-07 14:05:35,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=159, Invalid=2811, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 14:05:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2020-07-07 14:05:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 857. [2020-07-07 14:05:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-07-07 14:05:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 857 transitions. [2020-07-07 14:05:36,064 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 857 transitions. Word has length 833 [2020-07-07 14:05:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:36,065 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 857 transitions. [2020-07-07 14:05:36,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 14:05:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 857 transitions. [2020-07-07 14:05:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-07-07 14:05:36,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:36,072 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:36,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 14:05:36,072 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:36,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1035507476, now seen corresponding path program 16 times [2020-07-07 14:05:36,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:36,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473101689] [2020-07-07 14:05:36,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:38,603 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:38,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473101689] [2020-07-07 14:05:38,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:38,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-07-07 14:05:38,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531344143] [2020-07-07 14:05:38,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-07 14:05:38,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:38,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-07 14:05:38,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-07-07 14:05:38,606 INFO L87 Difference]: Start difference. First operand 857 states and 857 transitions. Second operand 30 states. [2020-07-07 14:05:38,856 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:45,483 INFO L93 Difference]: Finished difference Result 908 states and 908 transitions. [2020-07-07 14:05:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 14:05:45,484 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 856 [2020-07-07 14:05:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:45,489 INFO L225 Difference]: With dead ends: 908 [2020-07-07 14:05:45,489 INFO L226 Difference]: Without dead ends: 900 [2020-07-07 14:05:45,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 14:05:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-07-07 14:05:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 880. [2020-07-07 14:05:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-07-07 14:05:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 880 transitions. [2020-07-07 14:05:45,644 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 880 transitions. Word has length 856 [2020-07-07 14:05:45,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:45,645 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 880 transitions. [2020-07-07 14:05:45,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-07 14:05:45,645 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 880 transitions. [2020-07-07 14:05:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-07-07 14:05:45,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:45,651 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:45,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 14:05:45,651 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:45,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1948334892, now seen corresponding path program 17 times [2020-07-07 14:05:45,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:45,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387030505] [2020-07-07 14:05:45,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:48,234 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:48,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387030505] [2020-07-07 14:05:48,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:48,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-07-07 14:05:48,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846802305] [2020-07-07 14:05:48,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-07 14:05:48,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:48,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-07 14:05:48,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:05:48,237 INFO L87 Difference]: Start difference. First operand 880 states and 880 transitions. Second operand 31 states. [2020-07-07 14:05:48,498 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:05:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:55,503 INFO L93 Difference]: Finished difference Result 931 states and 931 transitions. [2020-07-07 14:05:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 14:05:55,504 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 879 [2020-07-07 14:05:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:55,508 INFO L225 Difference]: With dead ends: 931 [2020-07-07 14:05:55,509 INFO L226 Difference]: Without dead ends: 923 [2020-07-07 14:05:55,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2020-07-07 14:05:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-07-07 14:05:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 903. [2020-07-07 14:05:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-07-07 14:05:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 903 transitions. [2020-07-07 14:05:55,690 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 903 transitions. Word has length 879 [2020-07-07 14:05:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:55,690 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 903 transitions. [2020-07-07 14:05:55,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-07 14:05:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 903 transitions. [2020-07-07 14:05:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2020-07-07 14:05:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:55,697 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:55,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 14:05:55,698 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash -677739540, now seen corresponding path program 18 times [2020-07-07 14:05:55,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:55,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332116495] [2020-07-07 14:05:55,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:58,268 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:58,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332116495] [2020-07-07 14:05:58,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:58,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-07-07 14:05:58,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178438853] [2020-07-07 14:05:58,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-07 14:05:58,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-07 14:05:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-07-07 14:05:58,270 INFO L87 Difference]: Start difference. First operand 903 states and 903 transitions. Second operand 32 states. [2020-07-07 14:05:58,528 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:06:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:06,227 INFO L93 Difference]: Finished difference Result 954 states and 954 transitions. [2020-07-07 14:06:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-07 14:06:06,228 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 902 [2020-07-07 14:06:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:06,232 INFO L225 Difference]: With dead ends: 954 [2020-07-07 14:06:06,232 INFO L226 Difference]: Without dead ends: 946 [2020-07-07 14:06:06,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 14:06:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-07-07 14:06:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 926. [2020-07-07 14:06:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-07-07 14:06:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 926 transitions. [2020-07-07 14:06:06,444 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 926 transitions. Word has length 902 [2020-07-07 14:06:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:06,445 INFO L479 AbstractCegarLoop]: Abstraction has 926 states and 926 transitions. [2020-07-07 14:06:06,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-07 14:06:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 926 transitions. [2020-07-07 14:06:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-07-07 14:06:06,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:06,452 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:06,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 14:06:06,453 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1396525524, now seen corresponding path program 19 times [2020-07-07 14:06:06,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:06,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542750858] [2020-07-07 14:06:06,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:09,082 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:09,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542750858] [2020-07-07 14:06:09,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:09,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-07 14:06:09,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372358977] [2020-07-07 14:06:09,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 14:06:09,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 14:06:09,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:06:09,085 INFO L87 Difference]: Start difference. First operand 926 states and 926 transitions. Second operand 33 states. [2020-07-07 14:06:09,356 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:06:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:17,131 INFO L93 Difference]: Finished difference Result 977 states and 977 transitions. [2020-07-07 14:06:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 14:06:17,132 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 925 [2020-07-07 14:06:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:17,136 INFO L225 Difference]: With dead ends: 977 [2020-07-07 14:06:17,136 INFO L226 Difference]: Without dead ends: 969 [2020-07-07 14:06:17,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2020-07-07 14:06:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-07-07 14:06:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 949. [2020-07-07 14:06:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-07-07 14:06:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 949 transitions. [2020-07-07 14:06:17,558 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 949 transitions. Word has length 925 [2020-07-07 14:06:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:17,559 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 949 transitions. [2020-07-07 14:06:17,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 14:06:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 949 transitions. [2020-07-07 14:06:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-07-07 14:06:17,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:17,566 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:17,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 14:06:17,566 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1974886124, now seen corresponding path program 20 times [2020-07-07 14:06:17,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:17,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723810384] [2020-07-07 14:06:17,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:20,355 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:20,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723810384] [2020-07-07 14:06:20,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:20,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-07-07 14:06:20,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100452369] [2020-07-07 14:06:20,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-07 14:06:20,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:20,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-07 14:06:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 14:06:20,358 INFO L87 Difference]: Start difference. First operand 949 states and 949 transitions. Second operand 34 states. [2020-07-07 14:06:20,643 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:06:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:29,002 INFO L93 Difference]: Finished difference Result 1000 states and 1000 transitions. [2020-07-07 14:06:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 14:06:29,003 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 948 [2020-07-07 14:06:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:29,007 INFO L225 Difference]: With dead ends: 1000 [2020-07-07 14:06:29,007 INFO L226 Difference]: Without dead ends: 992 [2020-07-07 14:06:29,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2020-07-07 14:06:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-07-07 14:06:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 972. [2020-07-07 14:06:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-07-07 14:06:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 972 transitions. [2020-07-07 14:06:29,271 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 972 transitions. Word has length 948 [2020-07-07 14:06:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:29,272 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 972 transitions. [2020-07-07 14:06:29,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-07 14:06:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 972 transitions. [2020-07-07 14:06:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-07-07 14:06:29,279 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:29,280 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:29,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 14:06:29,280 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:29,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1543179988, now seen corresponding path program 21 times [2020-07-07 14:06:29,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:29,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978103537] [2020-07-07 14:06:29,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:32,400 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:32,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978103537] [2020-07-07 14:06:32,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:32,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-07-07 14:06:32,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319310932] [2020-07-07 14:06:32,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-07 14:06:32,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:32,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-07 14:06:32,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 14:06:32,402 INFO L87 Difference]: Start difference. First operand 972 states and 972 transitions. Second operand 35 states. [2020-07-07 14:06:32,675 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:06:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:41,453 INFO L93 Difference]: Finished difference Result 1023 states and 1023 transitions. [2020-07-07 14:06:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 14:06:41,455 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 971 [2020-07-07 14:06:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:41,460 INFO L225 Difference]: With dead ends: 1023 [2020-07-07 14:06:41,460 INFO L226 Difference]: Without dead ends: 1015 [2020-07-07 14:06:41,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=195, Invalid=4227, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 14:06:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-07-07 14:06:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-07-07 14:06:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-07-07 14:06:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 995 transitions. [2020-07-07 14:06:41,728 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 995 transitions. Word has length 971 [2020-07-07 14:06:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:41,729 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 995 transitions. [2020-07-07 14:06:41,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-07 14:06:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 995 transitions. [2020-07-07 14:06:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-07-07 14:06:41,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:41,737 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:41,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 14:06:41,737 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash 457898476, now seen corresponding path program 22 times [2020-07-07 14:06:41,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:41,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219451528] [2020-07-07 14:06:41,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:45,007 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219451528] [2020-07-07 14:06:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-07-07 14:06:45,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366121476] [2020-07-07 14:06:45,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-07 14:06:45,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:45,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-07 14:06:45,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 14:06:45,011 INFO L87 Difference]: Start difference. First operand 995 states and 995 transitions. Second operand 36 states. [2020-07-07 14:06:45,412 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:06:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:54,668 INFO L93 Difference]: Finished difference Result 1046 states and 1046 transitions. [2020-07-07 14:06:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-07 14:06:54,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 994 [2020-07-07 14:06:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:54,673 INFO L225 Difference]: With dead ends: 1046 [2020-07-07 14:06:54,673 INFO L226 Difference]: Without dead ends: 1038 [2020-07-07 14:06:54,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 14:06:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-07-07 14:06:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1018. [2020-07-07 14:06:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-07-07 14:06:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1018 transitions. [2020-07-07 14:06:54,947 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1018 transitions. Word has length 994 [2020-07-07 14:06:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:54,948 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1018 transitions. [2020-07-07 14:06:54,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-07 14:06:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1018 transitions. [2020-07-07 14:06:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-07-07 14:06:54,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:54,959 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:54,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-07 14:06:54,959 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1587014700, now seen corresponding path program 23 times [2020-07-07 14:06:54,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:54,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376630010] [2020-07-07 14:06:54,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:58,443 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:58,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376630010] [2020-07-07 14:06:58,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:58,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-07-07 14:06:58,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089312473] [2020-07-07 14:06:58,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-07 14:06:58,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-07 14:06:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 14:06:58,445 INFO L87 Difference]: Start difference. First operand 1018 states and 1018 transitions. Second operand 37 states. [2020-07-07 14:06:58,720 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:07:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:08,761 INFO L93 Difference]: Finished difference Result 1069 states and 1069 transitions. [2020-07-07 14:07:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 14:07:08,762 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1017 [2020-07-07 14:07:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:08,766 INFO L225 Difference]: With dead ends: 1069 [2020-07-07 14:07:08,766 INFO L226 Difference]: Without dead ends: 1061 [2020-07-07 14:07:08,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=207, Invalid=4763, Unknown=0, NotChecked=0, Total=4970 [2020-07-07 14:07:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-07-07 14:07:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1041. [2020-07-07 14:07:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-07-07 14:07:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1041 transitions. [2020-07-07 14:07:09,012 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1041 transitions. Word has length 1017 [2020-07-07 14:07:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:09,013 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1041 transitions. [2020-07-07 14:07:09,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-07 14:07:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1041 transitions. [2020-07-07 14:07:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-07-07 14:07:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:09,025 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:09,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-07 14:07:09,025 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 319313132, now seen corresponding path program 24 times [2020-07-07 14:07:09,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:09,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437728861] [2020-07-07 14:07:09,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:12,554 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:12,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437728861] [2020-07-07 14:07:12,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:12,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-07-07 14:07:12,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757717119] [2020-07-07 14:07:12,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-07 14:07:12,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-07 14:07:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 14:07:12,557 INFO L87 Difference]: Start difference. First operand 1041 states and 1041 transitions. Second operand 38 states. [2020-07-07 14:07:12,849 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:07:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:23,819 INFO L93 Difference]: Finished difference Result 1092 states and 1092 transitions. [2020-07-07 14:07:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 14:07:23,820 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 1040 [2020-07-07 14:07:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:23,824 INFO L225 Difference]: With dead ends: 1092 [2020-07-07 14:07:23,824 INFO L226 Difference]: Without dead ends: 1084 [2020-07-07 14:07:23,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 14:07:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-07-07 14:07:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1064. [2020-07-07 14:07:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-07-07 14:07:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1064 transitions. [2020-07-07 14:07:24,079 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1064 transitions. Word has length 1040 [2020-07-07 14:07:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:24,080 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1064 transitions. [2020-07-07 14:07:24,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-07 14:07:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1064 transitions. [2020-07-07 14:07:24,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-07-07 14:07:24,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:24,088 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:24,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-07 14:07:24,088 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:24,089 INFO L82 PathProgramCache]: Analyzing trace with hash -757835564, now seen corresponding path program 25 times [2020-07-07 14:07:24,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:24,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20986799] [2020-07-07 14:07:24,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:28,005 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:28,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20986799] [2020-07-07 14:07:28,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:28,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-07-07 14:07:28,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116072774] [2020-07-07 14:07:28,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-07 14:07:28,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:28,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-07 14:07:28,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 14:07:28,007 INFO L87 Difference]: Start difference. First operand 1064 states and 1064 transitions. Second operand 39 states. [2020-07-07 14:07:28,320 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:07:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:40,279 INFO L93 Difference]: Finished difference Result 1115 states and 1115 transitions. [2020-07-07 14:07:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 14:07:40,281 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 1063 [2020-07-07 14:07:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:40,286 INFO L225 Difference]: With dead ends: 1115 [2020-07-07 14:07:40,286 INFO L226 Difference]: Without dead ends: 1107 [2020-07-07 14:07:40,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=219, Invalid=5331, Unknown=0, NotChecked=0, Total=5550 [2020-07-07 14:07:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2020-07-07 14:07:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1087. [2020-07-07 14:07:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-07-07 14:07:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1087 transitions. [2020-07-07 14:07:40,550 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1087 transitions. Word has length 1063 [2020-07-07 14:07:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:40,550 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1087 transitions. [2020-07-07 14:07:40,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-07 14:07:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1087 transitions. [2020-07-07 14:07:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-07-07 14:07:40,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:40,559 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:40,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-07 14:07:40,560 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:40,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1939763180, now seen corresponding path program 26 times [2020-07-07 14:07:40,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:40,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945171280] [2020-07-07 14:07:40,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:44,599 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:44,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945171280] [2020-07-07 14:07:44,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:44,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-07-07 14:07:44,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501818078] [2020-07-07 14:07:44,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-07 14:07:44,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:44,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-07 14:07:44,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 14:07:44,602 INFO L87 Difference]: Start difference. First operand 1087 states and 1087 transitions. Second operand 40 states. [2020-07-07 14:07:44,903 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:07:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:57,567 INFO L93 Difference]: Finished difference Result 1138 states and 1138 transitions. [2020-07-07 14:07:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 14:07:57,569 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1086 [2020-07-07 14:07:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:57,574 INFO L225 Difference]: With dead ends: 1138 [2020-07-07 14:07:57,574 INFO L226 Difference]: Without dead ends: 1130 [2020-07-07 14:07:57,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2020-07-07 14:07:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2020-07-07 14:07:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1110. [2020-07-07 14:07:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2020-07-07 14:07:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1110 transitions. [2020-07-07 14:07:58,141 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1110 transitions. Word has length 1086 [2020-07-07 14:07:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:58,142 INFO L479 AbstractCegarLoop]: Abstraction has 1110 states and 1110 transitions. [2020-07-07 14:07:58,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-07 14:07:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1110 transitions. [2020-07-07 14:07:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-07-07 14:07:58,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:58,156 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:58,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-07 14:07:58,156 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1401937364, now seen corresponding path program 27 times [2020-07-07 14:07:58,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:58,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334250541] [2020-07-07 14:07:58,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:02,504 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:02,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334250541] [2020-07-07 14:08:02,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:02,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-07-07 14:08:02,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676345457] [2020-07-07 14:08:02,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-07 14:08:02,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-07 14:08:02,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 14:08:02,506 INFO L87 Difference]: Start difference. First operand 1110 states and 1110 transitions. Second operand 41 states. [2020-07-07 14:08:02,820 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:08:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:16,815 INFO L93 Difference]: Finished difference Result 1161 states and 1161 transitions. [2020-07-07 14:08:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-07 14:08:16,817 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 1109 [2020-07-07 14:08:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:16,822 INFO L225 Difference]: With dead ends: 1161 [2020-07-07 14:08:16,822 INFO L226 Difference]: Without dead ends: 1153 [2020-07-07 14:08:16,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=231, Invalid=5931, Unknown=0, NotChecked=0, Total=6162 [2020-07-07 14:08:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-07-07 14:08:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1133. [2020-07-07 14:08:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-07-07 14:08:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1133 transitions. [2020-07-07 14:08:17,130 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1133 transitions. Word has length 1109 [2020-07-07 14:08:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:17,132 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1133 transitions. [2020-07-07 14:08:17,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-07 14:08:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1133 transitions. [2020-07-07 14:08:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-07-07 14:08:17,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:17,147 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:17,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-07 14:08:17,147 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash 532499180, now seen corresponding path program 28 times [2020-07-07 14:08:17,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:17,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794920714] [2020-07-07 14:08:17,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:20,407 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:08:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:21,924 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:21,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794920714] [2020-07-07 14:08:21,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:21,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-07-07 14:08:21,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872194757] [2020-07-07 14:08:21,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-07 14:08:21,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-07 14:08:21,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 14:08:21,938 INFO L87 Difference]: Start difference. First operand 1133 states and 1133 transitions. Second operand 42 states. [2020-07-07 14:08:22,277 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:08:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:37,026 INFO L93 Difference]: Finished difference Result 1184 states and 1184 transitions. [2020-07-07 14:08:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-07 14:08:37,027 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 1132 [2020-07-07 14:08:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:37,033 INFO L225 Difference]: With dead ends: 1184 [2020-07-07 14:08:37,033 INFO L226 Difference]: Without dead ends: 1176 [2020-07-07 14:08:37,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2020-07-07 14:08:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-07-07 14:08:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2020-07-07 14:08:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-07-07 14:08:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1156 transitions. [2020-07-07 14:08:37,377 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1156 transitions. Word has length 1132 [2020-07-07 14:08:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:37,378 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1156 transitions. [2020-07-07 14:08:37,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-07 14:08:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1156 transitions. [2020-07-07 14:08:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2020-07-07 14:08:37,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:37,388 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:37,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-07 14:08:37,389 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:37,389 INFO L82 PathProgramCache]: Analyzing trace with hash 988455636, now seen corresponding path program 29 times [2020-07-07 14:08:37,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:37,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982845513] [2020-07-07 14:08:37,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:40,614 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:08:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:42,201 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:42,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982845513] [2020-07-07 14:08:42,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:42,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-07-07 14:08:42,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278757707] [2020-07-07 14:08:42,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-07 14:08:42,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:42,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-07 14:08:42,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 14:08:42,203 INFO L87 Difference]: Start difference. First operand 1156 states and 1156 transitions. Second operand 43 states. [2020-07-07 14:08:42,559 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:08:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:58,539 INFO L93 Difference]: Finished difference Result 1207 states and 1207 transitions. [2020-07-07 14:08:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 14:08:58,541 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 1155 [2020-07-07 14:08:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:58,547 INFO L225 Difference]: With dead ends: 1207 [2020-07-07 14:08:58,547 INFO L226 Difference]: Without dead ends: 1199 [2020-07-07 14:08:58,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2020-07-07 14:08:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-07-07 14:08:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1179. [2020-07-07 14:08:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-07-07 14:08:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1179 transitions. [2020-07-07 14:08:58,902 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1179 transitions. Word has length 1155 [2020-07-07 14:08:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:58,903 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1179 transitions. [2020-07-07 14:08:58,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-07 14:08:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1179 transitions. [2020-07-07 14:08:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2020-07-07 14:08:58,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:58,914 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:58,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-07 14:08:58,914 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash -971708948, now seen corresponding path program 30 times [2020-07-07 14:08:58,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:58,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361639658] [2020-07-07 14:08:58,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:03,997 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:09:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:09:05,502 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:05,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361639658] [2020-07-07 14:09:05,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:05,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-07-07 14:09:05,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042529154] [2020-07-07 14:09:05,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-07 14:09:05,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-07 14:09:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 14:09:05,504 INFO L87 Difference]: Start difference. First operand 1179 states and 1179 transitions. Second operand 44 states. [2020-07-07 14:09:05,814 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:09:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:23,342 INFO L93 Difference]: Finished difference Result 1230 states and 1230 transitions. [2020-07-07 14:09:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-07 14:09:23,344 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 1178 [2020-07-07 14:09:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:23,350 INFO L225 Difference]: With dead ends: 1230 [2020-07-07 14:09:23,350 INFO L226 Difference]: Without dead ends: 1222 [2020-07-07 14:09:23,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 14:09:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-07-07 14:09:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1202. [2020-07-07 14:09:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-07-07 14:09:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1202 transitions. [2020-07-07 14:09:23,713 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1202 transitions. Word has length 1178 [2020-07-07 14:09:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:23,714 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1202 transitions. [2020-07-07 14:09:23,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-07 14:09:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1202 transitions. [2020-07-07 14:09:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2020-07-07 14:09:23,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:23,725 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:09:23,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-07 14:09:23,725 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1412736980, now seen corresponding path program 31 times [2020-07-07 14:09:23,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:23,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600595260] [2020-07-07 14:09:23,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,641 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:09:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:09:29,253 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:29,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600595260] [2020-07-07 14:09:29,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:29,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-07-07 14:09:29,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209590712] [2020-07-07 14:09:29,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-07 14:09:29,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:29,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-07 14:09:29,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 14:09:29,256 INFO L87 Difference]: Start difference. First operand 1202 states and 1202 transitions. Second operand 45 states. [2020-07-07 14:09:29,622 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:09:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:48,259 INFO L93 Difference]: Finished difference Result 1253 states and 1253 transitions. [2020-07-07 14:09:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 14:09:48,261 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 1201 [2020-07-07 14:09:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:48,267 INFO L225 Difference]: With dead ends: 1253 [2020-07-07 14:09:48,267 INFO L226 Difference]: Without dead ends: 1245 [2020-07-07 14:09:48,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=255, Invalid=7227, Unknown=0, NotChecked=0, Total=7482 [2020-07-07 14:09:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-07-07 14:09:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1225. [2020-07-07 14:09:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-07-07 14:09:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1225 transitions. [2020-07-07 14:09:48,828 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1225 transitions. Word has length 1201 [2020-07-07 14:09:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:48,829 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1225 transitions. [2020-07-07 14:09:48,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-07 14:09:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1225 transitions. [2020-07-07 14:09:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1225 [2020-07-07 14:09:48,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:48,841 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:09:48,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-07-07 14:09:48,841 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash -514506516, now seen corresponding path program 32 times [2020-07-07 14:09:48,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:48,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223556883] [2020-07-07 14:09:48,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:53,188 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-07-07 14:09:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:09:54,904 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:54,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223556883] [2020-07-07 14:09:54,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:54,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2020-07-07 14:09:54,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50930475] [2020-07-07 14:09:54,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-07 14:09:54,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:54,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-07 14:09:54,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 14:09:54,906 INFO L87 Difference]: Start difference. First operand 1225 states and 1225 transitions. Second operand 46 states. [2020-07-07 14:09:55,250 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-07 14:10:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:10:16,706 INFO L93 Difference]: Finished difference Result 1276 states and 1276 transitions. [2020-07-07 14:10:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-07 14:10:16,707 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 1224 [2020-07-07 14:10:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:10:16,713 INFO L225 Difference]: With dead ends: 1276 [2020-07-07 14:10:16,713 INFO L226 Difference]: Without dead ends: 1268 [2020-07-07 14:10:16,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2020-07-07 14:10:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-07-07 14:10:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1248. [2020-07-07 14:10:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-07-07 14:10:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1248 transitions. [2020-07-07 14:10:17,152 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1248 transitions. Word has length 1224 [2020-07-07 14:10:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:10:17,153 INFO L479 AbstractCegarLoop]: Abstraction has 1248 states and 1248 transitions. [2020-07-07 14:10:17,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-07 14:10:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1248 transitions. [2020-07-07 14:10:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-07-07 14:10:17,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:10:17,165 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:10:17,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-07-07 14:10:17,165 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:10:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:10:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash 515763412, now seen corresponding path program 33 times [2020-07-07 14:10:17,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:10:17,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795582643] [2020-07-07 14:10:17,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:10:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:20,997 ERROR L253 erpolLogProxyWrapper]: Interpolant 1215 not inductive [2020-07-07 14:10:20,999 ERROR L276 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2020-07-07 14:10:20,999 WARN L341 FreeRefinementEngine]: Global settings require throwing the following exception [2020-07-07 14:10:21,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-07-07 14:10:21,000 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:222) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:884) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 14:10:21,006 INFO L168 Benchmark]: Toolchain (without parser) took 382907.86 ms. Allocated memory was 134.7 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 99.3 MB in the beginning and 929.9 MB in the end (delta: -830.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,006 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.38 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 99.1 MB in the beginning and 171.8 MB in the end (delta: -72.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,007 INFO L168 Benchmark]: Boogie Preprocessor took 136.69 ms. Allocated memory is still 200.8 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,008 INFO L168 Benchmark]: RCFGBuilder took 1630.70 ms. Allocated memory was 200.8 MB in the beginning and 226.5 MB in the end (delta: 25.7 MB). Free memory was 166.1 MB in the beginning and 162.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,008 INFO L168 Benchmark]: TraceAbstraction took 380530.80 ms. Allocated memory was 226.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 160.8 MB in the beginning and 929.9 MB in the end (delta: -769.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-07-07 14:10:21,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.38 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 99.1 MB in the beginning and 171.8 MB in the end (delta: -72.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.69 ms. Allocated memory is still 200.8 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1630.70 ms. Allocated memory was 200.8 MB in the beginning and 226.5 MB in the end (delta: 25.7 MB). Free memory was 166.1 MB in the beginning and 162.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 380530.80 ms. Allocated memory was 226.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 160.8 MB in the beginning and 929.9 MB in the end (delta: -769.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...