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/eca-rers2012/Problem04_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:02:11,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:02:11,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:02:11,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:02:11,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:02:11,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:02:11,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:02:11,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:02:11,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:02:11,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:02:11,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:02:11,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:02:11,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:02:11,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:02:11,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:02:11,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:02:11,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:02:11,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:02:11,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:02:11,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:02:11,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:02:11,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:02:11,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:02:11,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:02:11,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 14:02:11,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 14:02:11,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 14:02:11,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 14:02:11,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 14:02:11,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 14:02:11,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:02:11,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:02:11,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:02:11,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:02:11,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:02:11,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:02:11,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:02:11,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:02:11,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:02:11,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:02:11,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:02:11,061 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 [2019-09-07 14:02:11,076 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:02:11,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:02:11,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:02:11,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:02:11,078 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:02:11,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:02:11,079 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:02:11,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:02:11,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:02:11,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:02:11,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:02:11,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:02:11,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:02:11,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:02:11,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:02:11,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:02:11,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:02:11,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:02:11,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:02:11,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:02:11,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:02:11,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:02:11,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:02:11,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:02:11,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:02:11,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:02:11,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:02:11,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:02:11,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:02:11,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:02:11,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:02:11,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:02:11,139 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:02:11,140 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:02:11,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2019-09-07 14:02:11,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834aaa23/8094743d0c4e497291610b6fd999b7e7/FLAG85c970989 [2019-09-07 14:02:11,961 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:02:11,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2019-09-07 14:02:11,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834aaa23/8094743d0c4e497291610b6fd999b7e7/FLAG85c970989 [2019-09-07 14:02:12,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834aaa23/8094743d0c4e497291610b6fd999b7e7 [2019-09-07 14:02:12,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:02:12,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:02:12,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:02:12,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:02:12,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:02:12,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:02:12" (1/1) ... [2019-09-07 14:02:12,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f769f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:12, skipping insertion in model container [2019-09-07 14:02:12,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:02:12" (1/1) ... [2019-09-07 14:02:12,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:02:12,274 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:02:13,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:02:13,633 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:02:14,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:02:14,350 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:02:14,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14 WrapperNode [2019-09-07 14:02:14,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:02:14,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:02:14,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:02:14,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:02:14,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (1/1) ... [2019-09-07 14:02:14,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:02:14,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:02:14,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:02:14,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:02:14,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (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 [2019-09-07 14:02:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:02:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:02:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:02:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:02:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:02:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:02:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:02:18,843 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:02:18,844 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:02:18,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:02:18 BoogieIcfgContainer [2019-09-07 14:02:18,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:02:18,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:02:18,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:02:18,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:02:18,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:02:12" (1/3) ... [2019-09-07 14:02:18,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5571a19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:02:18, skipping insertion in model container [2019-09-07 14:02:18,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:02:14" (2/3) ... [2019-09-07 14:02:18,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5571a19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:02:18, skipping insertion in model container [2019-09-07 14:02:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:02:18" (3/3) ... [2019-09-07 14:02:18,859 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label38.c [2019-09-07 14:02:18,871 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:02:18,880 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:02:18,897 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:02:18,947 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:02:18,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:02:18,948 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:02:18,948 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:02:18,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:02:18,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:02:18,948 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:02:18,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:02:18,949 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:02:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 14:02:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2019-09-07 14:02:19,039 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:19,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:19,043 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:19,049 INFO L82 PathProgramCache]: Analyzing trace with hash 962900162, now seen corresponding path program 1 times [2019-09-07 14:02:19,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:19,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:19,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:02:21,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:02:21,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:02:21,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:02:21,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:02:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:02:21,358 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 14:02:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:25,794 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 14:02:25,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:02:25,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 777 [2019-09-07 14:02:25,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:25,859 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 14:02:25,860 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 14:02:25,876 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:02:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 14:02:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 14:02:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 14:02:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2992 transitions. [2019-09-07 14:02:26,099 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2992 transitions. Word has length 777 [2019-09-07 14:02:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:26,104 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 2992 transitions. [2019-09-07 14:02:26,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:02:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2992 transitions. [2019-09-07 14:02:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2019-09-07 14:02:26,159 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:26,162 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:26,162 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:26,164 INFO L82 PathProgramCache]: Analyzing trace with hash -565803181, now seen corresponding path program 1 times [2019-09-07 14:02:26,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:26,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:26,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:26,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:26,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:02:27,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:02:27,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:02:27,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:02:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:02:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:02:27,736 INFO L87 Difference]: Start difference. First operand 1676 states and 2992 transitions. Second operand 3 states. [2019-09-07 14:02:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:31,945 INFO L93 Difference]: Finished difference Result 5014 states and 9011 transitions. [2019-09-07 14:02:31,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:02:31,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 785 [2019-09-07 14:02:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:31,973 INFO L225 Difference]: With dead ends: 5014 [2019-09-07 14:02:31,973 INFO L226 Difference]: Without dead ends: 3344 [2019-09-07 14:02:31,978 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:02:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2019-09-07 14:02:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2019-09-07 14:02:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2019-09-07 14:02:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5630 transitions. [2019-09-07 14:02:32,056 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5630 transitions. Word has length 785 [2019-09-07 14:02:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:32,058 INFO L475 AbstractCegarLoop]: Abstraction has 3344 states and 5630 transitions. [2019-09-07 14:02:32,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:02:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5630 transitions. [2019-09-07 14:02:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2019-09-07 14:02:32,073 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:32,074 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:32,074 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:32,076 INFO L82 PathProgramCache]: Analyzing trace with hash 54429946, now seen corresponding path program 1 times [2019-09-07 14:02:32,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:32,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:32,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:32,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:32,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:02:32,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:32,727 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 14:02:32,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:02:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:33,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:02:33,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-07 14:02:33,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:02:33,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 14:02:33,620 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:02:33,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:02:33,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:02:33,621 INFO L87 Difference]: Start difference. First operand 3344 states and 5630 transitions. Second operand 9 states. [2019-09-07 14:02:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:45,674 INFO L93 Difference]: Finished difference Result 13994 states and 24284 transitions. [2019-09-07 14:02:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 14:02:45,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 848 [2019-09-07 14:02:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:45,762 INFO L225 Difference]: With dead ends: 13994 [2019-09-07 14:02:45,762 INFO L226 Difference]: Without dead ends: 10656 [2019-09-07 14:02:45,776 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 871 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 14:02:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2019-09-07 14:02:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10489. [2019-09-07 14:02:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10489 states. [2019-09-07 14:02:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10489 states to 10489 states and 14883 transitions. [2019-09-07 14:02:46,127 INFO L78 Accepts]: Start accepts. Automaton has 10489 states and 14883 transitions. Word has length 848 [2019-09-07 14:02:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:46,128 INFO L475 AbstractCegarLoop]: Abstraction has 10489 states and 14883 transitions. [2019-09-07 14:02:46,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:02:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10489 states and 14883 transitions. [2019-09-07 14:02:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2019-09-07 14:02:46,167 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:46,167 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:46,168 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:46,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1289830580, now seen corresponding path program 1 times [2019-09-07 14:02:46,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:46,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:46,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:46,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:46,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-07 14:02:47,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:47,225 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 14:02:47,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:02:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:47,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:02:47,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:02:48,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:02:48,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:02:48,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:02:48,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:02:48,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:02:48,018 INFO L87 Difference]: Start difference. First operand 10489 states and 14883 transitions. Second operand 9 states. [2019-09-07 14:02:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:55,467 INFO L93 Difference]: Finished difference Result 31543 states and 47344 transitions. [2019-09-07 14:02:55,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:02:55,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 865 [2019-09-07 14:02:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:55,570 INFO L225 Difference]: With dead ends: 31543 [2019-09-07 14:02:55,570 INFO L226 Difference]: Without dead ends: 21060 [2019-09-07 14:02:55,603 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 866 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:02:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21060 states. [2019-09-07 14:02:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21060 to 20894. [2019-09-07 14:02:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20894 states. [2019-09-07 14:02:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 29831 transitions. [2019-09-07 14:02:56,148 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 29831 transitions. Word has length 865 [2019-09-07 14:02:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:56,149 INFO L475 AbstractCegarLoop]: Abstraction has 20894 states and 29831 transitions. [2019-09-07 14:02:56,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:02:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 29831 transitions. [2019-09-07 14:02:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2019-09-07 14:02:56,211 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:56,212 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:56,213 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:56,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2130594804, now seen corresponding path program 1 times [2019-09-07 14:02:56,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:56,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:56,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:56,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:56,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 171 proven. 122 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-07 14:02:57,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:57,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:02:57,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:57,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:02:57,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 14:02:58,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:02:58,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:02:58,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:02:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:02:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:02:58,655 INFO L87 Difference]: Start difference. First operand 20894 states and 29831 transitions. Second operand 14 states. [2019-09-07 14:03:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:42,724 INFO L93 Difference]: Finished difference Result 164511 states and 289623 transitions. [2019-09-07 14:03:42,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-07 14:03:42,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 951 [2019-09-07 14:03:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:43,566 INFO L225 Difference]: With dead ends: 164511 [2019-09-07 14:03:43,566 INFO L226 Difference]: Without dead ends: 143623 [2019-09-07 14:03:43,706 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1001 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2019-09-07 14:03:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143623 states. [2019-09-07 14:03:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143623 to 141897. [2019-09-07 14:03:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141897 states. [2019-09-07 14:03:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141897 states to 141897 states and 202733 transitions. [2019-09-07 14:03:51,284 INFO L78 Accepts]: Start accepts. Automaton has 141897 states and 202733 transitions. Word has length 951 [2019-09-07 14:03:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:51,285 INFO L475 AbstractCegarLoop]: Abstraction has 141897 states and 202733 transitions. [2019-09-07 14:03:51,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:03:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 141897 states and 202733 transitions. [2019-09-07 14:03:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2019-09-07 14:03:51,611 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:51,612 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:03:51,612 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:51,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1474177212, now seen corresponding path program 1 times [2019-09-07 14:03:51,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:51,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:51,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:51,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:51,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 272 proven. 229 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 14:03:52,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:52,424 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:03:52,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:53,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:03:53,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-07 14:03:53,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:53,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:03:53,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:03:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:03:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:03:53,591 INFO L87 Difference]: Start difference. First operand 141897 states and 202733 transitions. Second operand 13 states. [2019-09-07 14:04:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:18,556 INFO L93 Difference]: Finished difference Result 331126 states and 507495 transitions. [2019-09-07 14:04:18,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 14:04:18,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1051 [2019-09-07 14:04:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:19,508 INFO L225 Difference]: With dead ends: 331126 [2019-09-07 14:04:19,509 INFO L226 Difference]: Without dead ends: 190069 [2019-09-07 14:04:23,883 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1090 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 14:04:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190069 states. [2019-09-07 14:04:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190069 to 188549. [2019-09-07 14:04:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188549 states. [2019-09-07 14:04:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188549 states to 188549 states and 248809 transitions. [2019-09-07 14:04:26,540 INFO L78 Accepts]: Start accepts. Automaton has 188549 states and 248809 transitions. Word has length 1051 [2019-09-07 14:04:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:26,541 INFO L475 AbstractCegarLoop]: Abstraction has 188549 states and 248809 transitions. [2019-09-07 14:04:26,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:04:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 188549 states and 248809 transitions. [2019-09-07 14:04:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2019-09-07 14:04:26,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:26,808 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:04:26,809 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1246253853, now seen corresponding path program 1 times [2019-09-07 14:04:26,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:26,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:26,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:26,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:26,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 347 proven. 165 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-09-07 14:04:28,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:28,873 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 14:04:28,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:29,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:04:29,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 14:04:30,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:30,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:04:30,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:04:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:04:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:04:30,002 INFO L87 Difference]: Start difference. First operand 188549 states and 248809 transitions. Second operand 9 states. [2019-09-07 14:04:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:44,492 INFO L93 Difference]: Finished difference Result 387487 states and 532205 transitions. [2019-09-07 14:04:44,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 14:04:44,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1110 [2019-09-07 14:04:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:45,059 INFO L225 Difference]: With dead ends: 387487 [2019-09-07 14:04:45,060 INFO L226 Difference]: Without dead ends: 193367 [2019-09-07 14:04:45,250 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2019-09-07 14:04:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193367 states. [2019-09-07 14:04:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193367 to 184234. [2019-09-07 14:04:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184234 states. [2019-09-07 14:04:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184234 states to 184234 states and 210365 transitions. [2019-09-07 14:04:52,853 INFO L78 Accepts]: Start accepts. Automaton has 184234 states and 210365 transitions. Word has length 1110 [2019-09-07 14:04:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:52,853 INFO L475 AbstractCegarLoop]: Abstraction has 184234 states and 210365 transitions. [2019-09-07 14:04:52,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:04:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 184234 states and 210365 transitions. [2019-09-07 14:04:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1365 [2019-09-07 14:04:52,995 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:52,996 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:04:52,997 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash 81403951, now seen corresponding path program 1 times [2019-09-07 14:04:52,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:52,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:52,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 685 proven. 479 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 14:04:55,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:55,729 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:55,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:56,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:04:56,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 1033 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 14:04:57,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:57,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:04:57,234 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:04:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:04:57,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:04:57,235 INFO L87 Difference]: Start difference. First operand 184234 states and 210365 transitions. Second operand 13 states. [2019-09-07 14:05:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:21,026 INFO L93 Difference]: Finished difference Result 368397 states and 418502 transitions. [2019-09-07 14:05:21,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-09-07 14:05:21,026 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1364 [2019-09-07 14:05:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:21,367 INFO L225 Difference]: With dead ends: 368397 [2019-09-07 14:05:21,367 INFO L226 Difference]: Without dead ends: 185003 [2019-09-07 14:05:21,515 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1494 GetRequests, 1420 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=960, Invalid=4590, Unknown=0, NotChecked=0, Total=5550 [2019-09-07 14:05:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185003 states. [2019-09-07 14:05:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185003 to 173627. [2019-09-07 14:05:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173627 states. [2019-09-07 14:05:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173627 states to 173627 states and 188374 transitions. [2019-09-07 14:05:23,965 INFO L78 Accepts]: Start accepts. Automaton has 173627 states and 188374 transitions. Word has length 1364 [2019-09-07 14:05:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:05:23,966 INFO L475 AbstractCegarLoop]: Abstraction has 173627 states and 188374 transitions. [2019-09-07 14:05:23,966 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:05:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 173627 states and 188374 transitions. [2019-09-07 14:05:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2019-09-07 14:05:24,078 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:05:24,079 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:05:24,079 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:05:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:05:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 391242297, now seen corresponding path program 1 times [2019-09-07 14:05:24,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:05:24,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:05:24,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:24,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:24,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 664 proven. 732 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2019-09-07 14:05:28,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:28,145 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:05:28,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:28,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:05:28,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1169 proven. 2 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2019-09-07 14:05:29,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:29,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:05:29,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:05:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:05:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:05:29,254 INFO L87 Difference]: Start difference. First operand 173627 states and 188374 transitions. Second operand 11 states. [2019-09-07 14:05:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:42,121 INFO L93 Difference]: Finished difference Result 359658 states and 390804 transitions. [2019-09-07 14:05:42,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 14:05:42,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1441 [2019-09-07 14:05:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:42,462 INFO L225 Difference]: With dead ends: 359658 [2019-09-07 14:05:42,463 INFO L226 Difference]: Without dead ends: 186871 [2019-09-07 14:05:42,631 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1472 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2019-09-07 14:05:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186871 states. [2019-09-07 14:05:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186871 to 182462. [2019-09-07 14:05:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182462 states. [2019-09-07 14:05:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182462 states to 182462 states and 192549 transitions. [2019-09-07 14:05:44,831 INFO L78 Accepts]: Start accepts. Automaton has 182462 states and 192549 transitions. Word has length 1441 [2019-09-07 14:05:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:05:44,832 INFO L475 AbstractCegarLoop]: Abstraction has 182462 states and 192549 transitions. [2019-09-07 14:05:44,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:05:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 182462 states and 192549 transitions. [2019-09-07 14:05:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1510 [2019-09-07 14:05:44,933 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:05:44,934 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:05:44,934 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:05:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:05:44,935 INFO L82 PathProgramCache]: Analyzing trace with hash -53416281, now seen corresponding path program 1 times [2019-09-07 14:05:44,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:05:44,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:05:44,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:44,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:44,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 902 proven. 417 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 14:05:49,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:49,332 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:05:49,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:49,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 2118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:05:49,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 986 proven. 2 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-09-07 14:05:50,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:50,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2019-09-07 14:05:50,587 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:05:50,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:05:50,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:05:50,587 INFO L87 Difference]: Start difference. First operand 182462 states and 192549 transitions. Second operand 13 states. [2019-09-07 14:06:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:10,061 INFO L93 Difference]: Finished difference Result 432633 states and 455628 transitions. [2019-09-07 14:06:10,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-07 14:06:10,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1509 [2019-09-07 14:06:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:10,747 INFO L225 Difference]: With dead ends: 432633 [2019-09-07 14:06:10,747 INFO L226 Difference]: Without dead ends: 256871 [2019-09-07 14:06:10,966 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1576 GetRequests, 1535 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2019-09-07 14:06:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256871 states. [2019-09-07 14:06:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256871 to 248444. [2019-09-07 14:06:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248444 states. [2019-09-07 14:06:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248444 states to 248444 states and 259826 transitions. [2019-09-07 14:06:13,860 INFO L78 Accepts]: Start accepts. Automaton has 248444 states and 259826 transitions. Word has length 1509 [2019-09-07 14:06:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:13,861 INFO L475 AbstractCegarLoop]: Abstraction has 248444 states and 259826 transitions. [2019-09-07 14:06:13,861 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:06:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 248444 states and 259826 transitions. [2019-09-07 14:06:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1587 [2019-09-07 14:06:13,990 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:06:13,991 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:06:13,992 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:06:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:06:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1781957963, now seen corresponding path program 1 times [2019-09-07 14:06:13,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:06:13,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:06:13,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:13,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:13,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 1082 proven. 648 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-07 14:06:19,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:06:19,583 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:06:19,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:20,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:06:20,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:06:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 1481 proven. 2 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2019-09-07 14:06:20,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:06:20,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:06:20,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:06:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:06:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:06:20,959 INFO L87 Difference]: Start difference. First operand 248444 states and 259826 transitions. Second operand 13 states. [2019-09-07 14:06:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:38,971 INFO L93 Difference]: Finished difference Result 487571 states and 511343 transitions. [2019-09-07 14:06:38,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-07 14:06:38,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1586 [2019-09-07 14:06:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:39,928 INFO L225 Difference]: With dead ends: 487571 [2019-09-07 14:06:39,928 INFO L226 Difference]: Without dead ends: 247505 [2019-09-07 14:06:40,085 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1686 GetRequests, 1628 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-09-07 14:06:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247505 states. [2019-09-07 14:06:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247505 to 247023. [2019-09-07 14:06:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247023 states. [2019-09-07 14:06:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247023 states to 247023 states and 257181 transitions. [2019-09-07 14:06:43,048 INFO L78 Accepts]: Start accepts. Automaton has 247023 states and 257181 transitions. Word has length 1586 [2019-09-07 14:06:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:43,049 INFO L475 AbstractCegarLoop]: Abstraction has 247023 states and 257181 transitions. [2019-09-07 14:06:43,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:06:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 247023 states and 257181 transitions. [2019-09-07 14:06:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1827 [2019-09-07 14:06:43,213 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:06:43,214 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:06:43,214 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:06:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:06:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -84928829, now seen corresponding path program 1 times [2019-09-07 14:06:43,215 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:06:43,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:06:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:43,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2019-09-07 14:06:49,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:06:49,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:06:49,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:06:49,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:06:49,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:06:49,139 INFO L87 Difference]: Start difference. First operand 247023 states and 257181 transitions. Second operand 3 states. [2019-09-07 14:06:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:53,077 INFO L93 Difference]: Finished difference Result 484607 states and 504809 transitions. [2019-09-07 14:06:53,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:06:53,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1826 [2019-09-07 14:06:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:54,055 INFO L225 Difference]: With dead ends: 484607 [2019-09-07 14:06:54,055 INFO L226 Difference]: Without dead ends: 245962 [2019-09-07 14:06:54,227 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:06:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245962 states. [2019-09-07 14:07:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245962 to 245945. [2019-09-07 14:07:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245945 states. [2019-09-07 14:07:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245945 states to 245945 states and 253003 transitions. [2019-09-07 14:07:00,548 INFO L78 Accepts]: Start accepts. Automaton has 245945 states and 253003 transitions. Word has length 1826 [2019-09-07 14:07:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:07:00,549 INFO L475 AbstractCegarLoop]: Abstraction has 245945 states and 253003 transitions. [2019-09-07 14:07:00,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:07:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 245945 states and 253003 transitions. [2019-09-07 14:07:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4281 [2019-09-07 14:07:00,895 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:07:00,897 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:07:00,897 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:07:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:07:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash -451034152, now seen corresponding path program 1 times [2019-09-07 14:07:00,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:07:00,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:07:00,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:00,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:07:00,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:07:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16405 backedges. 3751 proven. 4502 refuted. 0 times theorem prover too weak. 8152 trivial. 0 not checked. [2019-09-07 14:07:20,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:07:20,549 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:07:20,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:07:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:07:21,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 5623 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:07:21,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:07:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16405 backedges. 7844 proven. 2 refuted. 0 times theorem prover too weak. 8559 trivial. 0 not checked. [2019-09-07 14:07:27,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:07:27,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 14:07:27,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 14:07:27,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 14:07:27,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-09-07 14:07:27,402 INFO L87 Difference]: Start difference. First operand 245945 states and 253003 transitions. Second operand 21 states. [2019-09-07 14:07:27,763 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:07:27,968 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 14:07:29,351 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-07 14:07:30,048 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-07 14:07:30,652 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 14:07:32,538 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-07 14:07:33,083 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-07 14:07:35,697 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 14:07:44,180 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2019-09-07 14:07:46,379 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-07 14:07:47,381 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-07 14:07:49,294 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-07 14:07:51,484 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 14:07:52,897 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-07 14:07:56,694 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-07 14:07:58,956 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-07 14:07:59,105 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-07 14:07:59,784 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-07 14:08:00,021 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 14:08:00,198 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 14:08:00,831 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-07 14:08:01,009 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2019-09-07 14:08:01,561 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-07 14:08:01,712 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 14:08:02,158 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-07 14:08:02,320 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 14:08:03,083 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-09-07 14:08:03,945 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-07 14:08:04,183 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-07 14:08:04,719 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-07 14:08:04,871 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-07 14:08:05,189 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-07 14:08:05,586 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-07 14:08:10,825 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-07 14:08:11,999 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2019-09-07 14:08:12,388 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-09-07 14:08:12,761 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2019-09-07 14:08:13,225 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-07 14:08:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:08:14,576 INFO L93 Difference]: Finished difference Result 495774 states and 511418 transitions. [2019-09-07 14:08:14,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-09-07 14:08:14,576 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 4280 [2019-09-07 14:08:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:08:15,167 INFO L225 Difference]: With dead ends: 495774 [2019-09-07 14:08:15,167 INFO L226 Difference]: Without dead ends: 237989 [2019-09-07 14:08:15,418 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4458 GetRequests, 4348 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4512 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1947, Invalid=10485, Unknown=0, NotChecked=0, Total=12432 [2019-09-07 14:08:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237989 states. [2019-09-07 14:08:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237989 to 225555. [2019-09-07 14:08:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225555 states. [2019-09-07 14:08:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225555 states to 225555 states and 231350 transitions. [2019-09-07 14:08:22,198 INFO L78 Accepts]: Start accepts. Automaton has 225555 states and 231350 transitions. Word has length 4280 [2019-09-07 14:08:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:08:22,199 INFO L475 AbstractCegarLoop]: Abstraction has 225555 states and 231350 transitions. [2019-09-07 14:08:22,199 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 14:08:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 225555 states and 231350 transitions. [2019-09-07 14:08:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5417 [2019-09-07 14:08:22,546 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:08:22,548 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:08:22,548 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:08:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:08:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash 157062099, now seen corresponding path program 1 times [2019-09-07 14:08:22,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:08:22,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:08:22,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:22,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:22,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 27085 backedges. 4988 proven. 6002 refuted. 0 times theorem prover too weak. 16095 trivial. 0 not checked. [2019-09-07 14:08:40,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:08:40,387 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:08:40,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:41,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 6937 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-07 14:08:41,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:08:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27085 backedges. 3527 proven. 0 refuted. 0 times theorem prover too weak. 23558 trivial. 0 not checked. [2019-09-07 14:08:57,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:08:57,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2019-09-07 14:08:57,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 14:08:57,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 14:08:57,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-09-07 14:08:57,507 INFO L87 Difference]: Start difference. First operand 225555 states and 231350 transitions. Second operand 18 states. [2019-09-07 14:09:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:09:18,830 INFO L93 Difference]: Finished difference Result 426904 states and 437085 transitions. [2019-09-07 14:09:18,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2019-09-07 14:09:18,831 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 5416 [2019-09-07 14:09:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:09:19,175 INFO L225 Difference]: With dead ends: 426904 [2019-09-07 14:09:19,175 INFO L226 Difference]: Without dead ends: 207201 [2019-09-07 14:09:19,352 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5626 GetRequests, 5498 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6194 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2487, Invalid=14283, Unknown=0, NotChecked=0, Total=16770 [2019-09-07 14:09:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207201 states. [2019-09-07 14:09:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207201 to 185276. [2019-09-07 14:09:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185276 states. [2019-09-07 14:09:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185276 states to 185276 states and 188375 transitions. [2019-09-07 14:09:21,631 INFO L78 Accepts]: Start accepts. Automaton has 185276 states and 188375 transitions. Word has length 5416 [2019-09-07 14:09:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:09:21,632 INFO L475 AbstractCegarLoop]: Abstraction has 185276 states and 188375 transitions. [2019-09-07 14:09:21,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 14:09:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 185276 states and 188375 transitions. [2019-09-07 14:09:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5397 [2019-09-07 14:09:21,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:09:21,905 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:09:21,906 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:09:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:09:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1694478934, now seen corresponding path program 1 times [2019-09-07 14:09:21,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:09:21,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:09:21,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:21,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:09:21,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:09:26,227 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-07 14:09:26,397 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-07 14:10:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 25163 backedges. 17274 proven. 3362 refuted. 0 times theorem prover too weak. 4527 trivial. 0 not checked. [2019-09-07 14:10:14,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:10:14,752 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:10:14,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:10:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:10:16,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 6971 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-07 14:10:16,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:10:16,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 14:10:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25163 backedges. 11792 proven. 5 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2019-09-07 14:10:50,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:10:50,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 7] total 31 [2019-09-07 14:10:50,532 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-07 14:10:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-07 14:10:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2019-09-07 14:10:50,532 INFO L87 Difference]: Start difference. First operand 185276 states and 188375 transitions. Second operand 31 states. [2019-09-07 14:10:51,073 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2019-09-07 14:10:53,377 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-07 14:10:56,024 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2019-09-07 14:10:56,452 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-07 14:10:57,153 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2019-09-07 14:10:57,968 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 44 [2019-09-07 14:10:59,873 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-07 14:11:00,487 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2019-09-07 14:11:02,158 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2019-09-07 14:11:04,245 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-07 14:11:05,546 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2019-09-07 14:11:08,305 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-07 14:11:08,947 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-07 14:11:09,245 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-07 14:11:10,738 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-07 14:11:12,747 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 14:11:15,101 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2019-09-07 14:11:18,345 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 14:11:18,522 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2019-09-07 14:11:20,671 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2019-09-07 14:11:23,458 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-07 14:11:24,648 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-07 14:11:25,881 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-07 14:11:26,315 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-07 14:11:26,531 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 14:11:27,452 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2019-09-07 14:11:30,033 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-09-07 14:11:32,571 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-07 14:11:33,036 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-07 14:11:33,720 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:11:33,998 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-07 14:11:34,785 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 33 [2019-09-07 14:11:37,426 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-07 14:11:37,692 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-07 14:11:38,296 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-07 14:11:38,798 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2019-09-07 14:11:39,624 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-07 14:11:40,269 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-07 14:11:42,585 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2019-09-07 14:11:43,645 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-09-07 14:11:45,789 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-07 14:11:47,177 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-07 14:11:50,287 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-07 14:11:51,226 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-07 14:11:51,974 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-07 14:11:53,308 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 14:11:54,927 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2019-09-07 14:11:55,354 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 14:11:58,792 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2019-09-07 14:12:00,395 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-07 14:12:01,262 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:12:01,541 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-07 14:12:01,797 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-07 14:12:02,015 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-07 14:12:02,368 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-09-07 14:12:02,620 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 14:12:03,263 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-07 14:12:03,542 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2019-09-07 14:12:04,084 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2019-09-07 14:12:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:12:04,565 INFO L93 Difference]: Finished difference Result 411462 states and 419088 transitions. [2019-09-07 14:12:04,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2019-09-07 14:12:04,566 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 5396 [2019-09-07 14:12:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:12:05,057 INFO L225 Difference]: With dead ends: 411462 [2019-09-07 14:12:05,058 INFO L226 Difference]: Without dead ends: 229533 [2019-09-07 14:12:05,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5705 GetRequests, 5536 SyntacticMatches, 4 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10016 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=4000, Invalid=23722, Unknown=0, NotChecked=0, Total=27722 [2019-09-07 14:12:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229533 states. [2019-09-07 14:12:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229533 to 224287. [2019-09-07 14:12:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224287 states. [2019-09-07 14:12:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224287 states to 224287 states and 227797 transitions. [2019-09-07 14:12:07,772 INFO L78 Accepts]: Start accepts. Automaton has 224287 states and 227797 transitions. Word has length 5396 [2019-09-07 14:12:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:12:07,775 INFO L475 AbstractCegarLoop]: Abstraction has 224287 states and 227797 transitions. [2019-09-07 14:12:07,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-07 14:12:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 224287 states and 227797 transitions. [2019-09-07 14:12:08,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5994 [2019-09-07 14:12:08,149 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:12:08,151 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:12:08,151 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:12:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:12:08,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1444843353, now seen corresponding path program 1 times [2019-09-07 14:12:08,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:12:08,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:12:08,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:12:08,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:12:08,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:12:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:12:17,470 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-07 14:12:17,639 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-07 14:12:17,786 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-07 14:13:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30267 backedges. 13731 proven. 11185 refuted. 0 times theorem prover too weak. 5351 trivial. 0 not checked. [2019-09-07 14:13:45,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:45,592 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:13:45,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:47,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 7682 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:13:47,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:47,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 14:13:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30267 backedges. 4282 proven. 2 refuted. 0 times theorem prover too weak. 25983 trivial. 0 not checked. [2019-09-07 14:13:58,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:13:58,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5] total 36 [2019-09-07 14:13:58,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-07 14:13:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-07 14:13:58,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 14:13:58,919 INFO L87 Difference]: Start difference. First operand 224287 states and 227797 transitions. Second operand 36 states. [2019-09-07 14:13:59,638 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-07 14:13:59,833 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-07 14:14:02,572 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-09-07 14:14:06,289 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-07 14:14:07,046 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-07 14:14:10,199 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2019-09-07 14:14:11,835 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2019-09-07 14:14:12,109 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-07 14:14:14,416 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 35 [2019-09-07 14:14:17,895 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-07 14:14:21,873 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-09-07 14:14:22,977 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50