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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 08:26:56,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 08:26:56,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 08:26:56,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 08:26:56,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 08:26:56,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 08:26:56,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 08:26:56,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 08:26:56,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 08:26:56,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 08:26:56,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 08:26:56,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 08:26:56,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 08:26:56,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 08:26:56,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 08:26:56,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 08:26:56,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 08:26:56,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 08:26:56,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 08:26:56,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 08:26:56,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 08:26:56,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 08:26:56,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 08:26:56,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 08:26:56,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 08:26:56,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 08:26:56,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 08:26:56,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 08:26:56,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 08:26:56,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 08:26:56,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 08:26:56,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 08:26:56,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 08:26:56,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 08:26:56,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 08:26:56,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 08:26:56,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 08:26:56,959 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 08:26:56,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 08:26:56,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 08:26:56,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 08:26:56,963 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 08:26:56,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 08:26:56,963 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 08:26:56,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 08:26:56,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 08:26:56,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 08:26:56,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 08:26:56,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 08:26:56,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 08:26:56,966 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 08:26:56,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 08:26:56,967 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 08:26:56,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 08:26:56,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 08:26:56,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 08:26:56,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 08:26:56,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 08:26:56,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 08:26:56,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 08:26:56,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 08:26:56,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 08:26:56,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 08:26:56,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 08:26:56,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 08:26:56,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 08:26:57,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 08:26:57,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 08:26:57,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 08:26:57,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 08:26:57,031 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 08:26:57,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2019-09-08 08:26:57,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682adcaa9/d603e1daba9944f2b09ea8264f9dc04b/FLAG5e6eb2112 [2019-09-08 08:26:57,760 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 08:26:57,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2019-09-08 08:26:57,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682adcaa9/d603e1daba9944f2b09ea8264f9dc04b/FLAG5e6eb2112 [2019-09-08 08:26:58,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682adcaa9/d603e1daba9944f2b09ea8264f9dc04b [2019-09-08 08:26:58,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 08:26:58,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 08:26:58,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 08:26:58,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 08:26:58,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 08:26:58,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:58,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a36dcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58, skipping insertion in model container [2019-09-08 08:26:58,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:58,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 08:26:58,116 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 08:26:58,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:26:58,724 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 08:26:58,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:26:58,929 INFO L192 MainTranslator]: Completed translation [2019-09-08 08:26:58,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58 WrapperNode [2019-09-08 08:26:58,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 08:26:58,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 08:26:58,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 08:26:58,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 08:26:58,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:58,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:58,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:58,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:59,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:59,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:59,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (1/1) ... [2019-09-08 08:26:59,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 08:26:59,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 08:26:59,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 08:26:59,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 08:26:59,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (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 [2019-09-08 08:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 08:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 08:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 08:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 08:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 08:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 08:26:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2019-09-08 08:26:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 08:26:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 08:26:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 08:26:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 08:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 08:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 08:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 08:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 08:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 08:26:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 08:26:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 08:26:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 08:26:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 08:26:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 08:26:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 08:26:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 08:26:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 08:26:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 08:26:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 08:26:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 08:26:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 08:26:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 08:27:01,566 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 08:27:01,566 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 08:27:01,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:27:01 BoogieIcfgContainer [2019-09-08 08:27:01,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 08:27:01,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 08:27:01,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 08:27:01,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 08:27:01,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 08:26:58" (1/3) ... [2019-09-08 08:27:01,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43dcc96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:27:01, skipping insertion in model container [2019-09-08 08:27:01,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:26:58" (2/3) ... [2019-09-08 08:27:01,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43dcc96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:27:01, skipping insertion in model container [2019-09-08 08:27:01,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:27:01" (3/3) ... [2019-09-08 08:27:01,575 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2019-09-08 08:27:01,585 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 08:27:01,593 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 08:27:01,607 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 08:27:01,644 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 08:27:01,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 08:27:01,645 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 08:27:01,645 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 08:27:01,645 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 08:27:01,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 08:27:01,645 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 08:27:01,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 08:27:01,646 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 08:27:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states. [2019-09-08 08:27:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-08 08:27:01,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:01,708 INFO L399 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] [2019-09-08 08:27:01,710 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1090629948, now seen corresponding path program 1 times [2019-09-08 08:27:01,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:01,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:01,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:01,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:01,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:02,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:02,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:27:02,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:27:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:27:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:27:02,408 INFO L87 Difference]: Start difference. First operand 776 states. Second operand 5 states. [2019-09-08 08:27:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:02,759 INFO L93 Difference]: Finished difference Result 994 states and 1763 transitions. [2019-09-08 08:27:02,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 08:27:02,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-09-08 08:27:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:02,797 INFO L225 Difference]: With dead ends: 994 [2019-09-08 08:27:02,798 INFO L226 Difference]: Without dead ends: 771 [2019-09-08 08:27:02,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2019-09-08 08:27:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2019-09-08 08:27:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-09-08 08:27:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1330 transitions. [2019-09-08 08:27:02,958 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1330 transitions. Word has length 181 [2019-09-08 08:27:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:02,959 INFO L475 AbstractCegarLoop]: Abstraction has 771 states and 1330 transitions. [2019-09-08 08:27:02,959 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 08:27:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1330 transitions. [2019-09-08 08:27:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-09-08 08:27:02,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:02,969 INFO L399 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] [2019-09-08 08:27:02,970 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1965304482, now seen corresponding path program 1 times [2019-09-08 08:27:02,971 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:02,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:02,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:02,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:02,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:03,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:03,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-08 08:27:03,696 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 08:27:03,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 08:27:03,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-09-08 08:27:03,697 INFO L87 Difference]: Start difference. First operand 771 states and 1330 transitions. Second operand 13 states. [2019-09-08 08:27:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:19,511 INFO L93 Difference]: Finished difference Result 3582 states and 6000 transitions. [2019-09-08 08:27:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 08:27:19,512 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 245 [2019-09-08 08:27:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:19,545 INFO L225 Difference]: With dead ends: 3582 [2019-09-08 08:27:19,545 INFO L226 Difference]: Without dead ends: 3368 [2019-09-08 08:27:19,557 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 08:27:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2019-09-08 08:27:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1845. [2019-09-08 08:27:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2019-09-08 08:27:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 3108 transitions. [2019-09-08 08:27:19,719 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 3108 transitions. Word has length 245 [2019-09-08 08:27:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:19,723 INFO L475 AbstractCegarLoop]: Abstraction has 1845 states and 3108 transitions. [2019-09-08 08:27:19,723 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 08:27:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 3108 transitions. [2019-09-08 08:27:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-09-08 08:27:19,732 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:19,732 INFO L399 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] [2019-09-08 08:27:19,732 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash -274859823, now seen corresponding path program 1 times [2019-09-08 08:27:19,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:19,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:19,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:19,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:19,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:20,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:20,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:27:20,172 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:27:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:27:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:20,172 INFO L87 Difference]: Start difference. First operand 1845 states and 3108 transitions. Second operand 6 states. [2019-09-08 08:27:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:25,224 INFO L93 Difference]: Finished difference Result 4443 states and 7401 transitions. [2019-09-08 08:27:25,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 08:27:25,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2019-09-08 08:27:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:25,259 INFO L225 Difference]: With dead ends: 4443 [2019-09-08 08:27:25,260 INFO L226 Difference]: Without dead ends: 3155 [2019-09-08 08:27:25,264 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:27:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2019-09-08 08:27:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2934. [2019-09-08 08:27:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2019-09-08 08:27:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4901 transitions. [2019-09-08 08:27:25,405 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4901 transitions. Word has length 246 [2019-09-08 08:27:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:25,406 INFO L475 AbstractCegarLoop]: Abstraction has 2934 states and 4901 transitions. [2019-09-08 08:27:25,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:27:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4901 transitions. [2019-09-08 08:27:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-09-08 08:27:25,413 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:25,413 INFO L399 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] [2019-09-08 08:27:25,413 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:25,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1052161479, now seen corresponding path program 1 times [2019-09-08 08:27:25,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:25,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:25,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:25,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:25,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:25,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:25,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:27:25,786 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:27:25,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:27:25,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:25,786 INFO L87 Difference]: Start difference. First operand 2934 states and 4901 transitions. Second operand 6 states. [2019-09-08 08:27:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:28,945 INFO L93 Difference]: Finished difference Result 7072 states and 11709 transitions. [2019-09-08 08:27:28,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 08:27:28,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2019-09-08 08:27:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:28,981 INFO L225 Difference]: With dead ends: 7072 [2019-09-08 08:27:28,981 INFO L226 Difference]: Without dead ends: 4695 [2019-09-08 08:27:28,990 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-08 08:27:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2019-09-08 08:27:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4672. [2019-09-08 08:27:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2019-09-08 08:27:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 7747 transitions. [2019-09-08 08:27:29,220 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 7747 transitions. Word has length 247 [2019-09-08 08:27:29,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:29,221 INFO L475 AbstractCegarLoop]: Abstraction has 4672 states and 7747 transitions. [2019-09-08 08:27:29,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:27:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 7747 transitions. [2019-09-08 08:27:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-09-08 08:27:29,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:29,230 INFO L399 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] [2019-09-08 08:27:29,230 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash 569606024, now seen corresponding path program 1 times [2019-09-08 08:27:29,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:29,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:29,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:29,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:29,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:29,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:29,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:27:29,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:27:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:27:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:29,515 INFO L87 Difference]: Start difference. First operand 4672 states and 7747 transitions. Second operand 6 states. [2019-09-08 08:27:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:34,905 INFO L93 Difference]: Finished difference Result 25016 states and 41230 transitions. [2019-09-08 08:27:34,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:27:34,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 248 [2019-09-08 08:27:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:35,034 INFO L225 Difference]: With dead ends: 25016 [2019-09-08 08:27:35,035 INFO L226 Difference]: Without dead ends: 20901 [2019-09-08 08:27:35,055 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:27:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20901 states. [2019-09-08 08:27:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20901 to 20855. [2019-09-08 08:27:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20855 states. [2019-09-08 08:27:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20855 states to 20855 states and 34282 transitions. [2019-09-08 08:27:35,789 INFO L78 Accepts]: Start accepts. Automaton has 20855 states and 34282 transitions. Word has length 248 [2019-09-08 08:27:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:35,789 INFO L475 AbstractCegarLoop]: Abstraction has 20855 states and 34282 transitions. [2019-09-08 08:27:35,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:27:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 20855 states and 34282 transitions. [2019-09-08 08:27:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-09-08 08:27:35,799 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:35,799 INFO L399 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] [2019-09-08 08:27:35,800 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash -746893872, now seen corresponding path program 1 times [2019-09-08 08:27:35,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:35,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:35,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:35,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:35,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:36,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:36,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:27:36,141 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:27:36,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:27:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:36,142 INFO L87 Difference]: Start difference. First operand 20855 states and 34282 transitions. Second operand 6 states. [2019-09-08 08:27:41,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:41,926 INFO L93 Difference]: Finished difference Result 121880 states and 200186 transitions. [2019-09-08 08:27:41,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:27:41,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2019-09-08 08:27:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:27:42,383 INFO L225 Difference]: With dead ends: 121880 [2019-09-08 08:27:42,383 INFO L226 Difference]: Without dead ends: 101582 [2019-09-08 08:27:42,472 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:27:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101582 states. [2019-09-08 08:27:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101582 to 101384. [2019-09-08 08:27:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101384 states. [2019-09-08 08:27:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101384 states to 101384 states and 166203 transitions. [2019-09-08 08:27:46,661 INFO L78 Accepts]: Start accepts. Automaton has 101384 states and 166203 transitions. Word has length 249 [2019-09-08 08:27:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:27:46,662 INFO L475 AbstractCegarLoop]: Abstraction has 101384 states and 166203 transitions. [2019-09-08 08:27:46,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:27:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 101384 states and 166203 transitions. [2019-09-08 08:27:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-09-08 08:27:46,675 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:27:46,676 INFO L399 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] [2019-09-08 08:27:46,676 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:27:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:27:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1339597375, now seen corresponding path program 1 times [2019-09-08 08:27:46,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:27:46,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:27:46,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:46,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:27:46,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:27:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:27:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:27:46,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:27:46,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:27:46,905 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:27:46,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:27:46,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:27:46,906 INFO L87 Difference]: Start difference. First operand 101384 states and 166203 transitions. Second operand 6 states. [2019-09-08 08:27:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:27:59,929 INFO L93 Difference]: Finished difference Result 548648 states and 899075 transitions. [2019-09-08 08:27:59,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:27:59,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2019-09-08 08:27:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:28:01,397 INFO L225 Difference]: With dead ends: 548648 [2019-09-08 08:28:01,397 INFO L226 Difference]: Without dead ends: 447821 [2019-09-08 08:28:01,641 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:28:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447821 states. [2019-09-08 08:28:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447821 to 446872. [2019-09-08 08:28:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446872 states. [2019-09-08 08:28:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446872 states to 446872 states and 731274 transitions. [2019-09-08 08:28:22,507 INFO L78 Accepts]: Start accepts. Automaton has 446872 states and 731274 transitions. Word has length 250 [2019-09-08 08:28:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:28:22,508 INFO L475 AbstractCegarLoop]: Abstraction has 446872 states and 731274 transitions. [2019-09-08 08:28:22,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:28:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 446872 states and 731274 transitions. [2019-09-08 08:28:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-09-08 08:28:22,519 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:28:22,520 INFO L399 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] [2019-09-08 08:28:22,520 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:28:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:28:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2033618999, now seen corresponding path program 1 times [2019-09-08 08:28:22,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:28:22,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:28:22,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:28:22,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:28:22,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:28:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:28:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:28:22,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:28:22,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:28:22,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:28:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:28:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:28:22,942 INFO L87 Difference]: Start difference. First operand 446872 states and 731274 transitions. Second operand 6 states. [2019-09-08 08:28:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:28:47,307 INFO L93 Difference]: Finished difference Result 1468414 states and 2404322 transitions. [2019-09-08 08:28:47,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 08:28:47,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 252 [2019-09-08 08:28:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:29:00,462 INFO L225 Difference]: With dead ends: 1468414 [2019-09-08 08:29:00,463 INFO L226 Difference]: Without dead ends: 1022099 [2019-09-08 08:29:01,015 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-08 08:29:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022099 states. [2019-09-08 08:29:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022099 to 1017066. [2019-09-08 08:29:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017066 states. [2019-09-08 08:30:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017066 states to 1017066 states and 1652392 transitions. [2019-09-08 08:30:02,413 INFO L78 Accepts]: Start accepts. Automaton has 1017066 states and 1652392 transitions. Word has length 252 [2019-09-08 08:30:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:30:02,414 INFO L475 AbstractCegarLoop]: Abstraction has 1017066 states and 1652392 transitions. [2019-09-08 08:30:02,414 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:30:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1017066 states and 1652392 transitions. [2019-09-08 08:30:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-09-08 08:30:02,424 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:30:02,424 INFO L399 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] [2019-09-08 08:30:02,424 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:30:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:30:02,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1046742769, now seen corresponding path program 1 times [2019-09-08 08:30:02,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:30:02,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:30:02,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:30:02,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:30:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:30:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:30:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:30:02,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:30:02,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:30:02,893 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:30:02,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:30:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:30:02,894 INFO L87 Difference]: Start difference. First operand 1017066 states and 1652392 transitions. Second operand 5 states. [2019-09-08 08:30:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:30:58,810 INFO L93 Difference]: Finished difference Result 3037177 states and 4969991 transitions. [2019-09-08 08:30:58,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 08:30:58,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2019-09-08 08:30:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:31:24,512 INFO L225 Difference]: With dead ends: 3037177 [2019-09-08 08:31:24,512 INFO L226 Difference]: Without dead ends: 2020129 [2019-09-08 08:31:25,703 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 08:31:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020129 states.