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/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:51:01,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:51:01,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:51:01,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:51:01,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:51:01,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:51:01,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:51:01,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:51:01,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:51:01,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:51:01,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:51:01,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:51:01,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:51:01,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:51:01,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:51:01,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:51:01,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:51:01,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:51:01,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:51:01,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:51:01,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:51:01,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:51:01,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:51:01,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:51:01,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:51:01,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:51:01,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:51:01,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:51:01,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:51:01,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:51:01,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:51:01,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:51:01,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:51:01,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:51:01,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:51:01,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:51:01,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:51:01,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:51:01,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:51:01,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:51:01,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:51:01,246 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 [2019-10-13 19:51:01,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:51:01,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:51:01,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:51:01,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:51:01,269 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:51:01,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:51:01,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:51:01,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:51:01,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:51:01,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:51:01,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:51:01,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:51:01,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:51:01,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:51:01,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:51:01,271 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:51:01,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:51:01,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:51:01,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:51:01,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:51:01,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:51:01,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:51:01,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:51:01,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:51:01,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:51:01,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:51:01,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:51:01,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:51:01,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:51:01,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:51:01,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:51:01,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:51:01,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:51:01,597 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:51:01,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2019-10-13 19:51:01,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8232be7a4/6bf37b128255463c9f10f44f3997e9b6/FLAG5323a02c4 [2019-10-13 19:51:02,136 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:51:02,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2019-10-13 19:51:02,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8232be7a4/6bf37b128255463c9f10f44f3997e9b6/FLAG5323a02c4 [2019-10-13 19:51:02,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8232be7a4/6bf37b128255463c9f10f44f3997e9b6 [2019-10-13 19:51:02,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:51:02,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:51:02,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:51:02,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:51:02,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:51:02,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbd79e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02, skipping insertion in model container [2019-10-13 19:51:02,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,496 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:51:02,544 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:51:02,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:51:02,756 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:51:02,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:51:02,896 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:51:02,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02 WrapperNode [2019-10-13 19:51:02,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:51:02,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:51:02,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:51:02,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:51:02,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (1/1) ... [2019-10-13 19:51:02,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:51:02,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:51:02,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:51:02,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:51:02,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (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 [2019-10-13 19:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-13 19:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-13 19:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-13 19:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-13 19:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-13 19:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-13 19:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-13 19:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-10-13 19:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-13 19:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:51:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:51:03,500 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:51:03,500 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:51:03,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:03 BoogieIcfgContainer [2019-10-13 19:51:03,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:51:03,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:51:03,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:51:03,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:51:03,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:02" (1/3) ... [2019-10-13 19:51:03,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b07359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:03, skipping insertion in model container [2019-10-13 19:51:03,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:02" (2/3) ... [2019-10-13 19:51:03,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b07359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:03, skipping insertion in model container [2019-10-13 19:51:03,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:03" (3/3) ... [2019-10-13 19:51:03,511 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2019-10-13 19:51:03,521 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:51:03,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:51:03,541 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:51:03,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:51:03,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:51:03,569 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:51:03,569 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:51:03,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:51:03,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:51:03,570 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:51:03,570 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:51:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2019-10-13 19:51:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:03,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:03,607 INFO L380 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] [2019-10-13 19:51:03,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2019-10-13 19:51:03,624 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:03,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732838616] [2019-10-13 19:51:03,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:03,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:03,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:04,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732838616] [2019-10-13 19:51:04,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:04,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:51:04,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270589428] [2019-10-13 19:51:04,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:51:04,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:04,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:51:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:51:04,202 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 9 states. [2019-10-13 19:51:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:06,444 INFO L93 Difference]: Finished difference Result 501 states and 755 transitions. [2019-10-13 19:51:06,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:51:06,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2019-10-13 19:51:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:06,484 INFO L225 Difference]: With dead ends: 501 [2019-10-13 19:51:06,484 INFO L226 Difference]: Without dead ends: 357 [2019-10-13 19:51:06,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:51:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-10-13 19:51:06,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 244. [2019-10-13 19:51:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-10-13 19:51:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 323 transitions. [2019-10-13 19:51:06,658 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 323 transitions. Word has length 77 [2019-10-13 19:51:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:06,659 INFO L462 AbstractCegarLoop]: Abstraction has 244 states and 323 transitions. [2019-10-13 19:51:06,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:51:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 323 transitions. [2019-10-13 19:51:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:06,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:06,669 INFO L380 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] [2019-10-13 19:51:06,669 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:06,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2125445556, now seen corresponding path program 1 times [2019-10-13 19:51:06,672 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:06,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547386335] [2019-10-13 19:51:06,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:06,673 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:06,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:06,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547386335] [2019-10-13 19:51:06,919 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:06,919 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:06,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212158824] [2019-10-13 19:51:06,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:06,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:06,922 INFO L87 Difference]: Start difference. First operand 244 states and 323 transitions. Second operand 10 states. [2019-10-13 19:51:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:08,050 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2019-10-13 19:51:08,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:51:08,051 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2019-10-13 19:51:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:08,056 INFO L225 Difference]: With dead ends: 573 [2019-10-13 19:51:08,056 INFO L226 Difference]: Without dead ends: 348 [2019-10-13 19:51:08,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:51:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-10-13 19:51:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 244. [2019-10-13 19:51:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-10-13 19:51:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2019-10-13 19:51:08,124 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 77 [2019-10-13 19:51:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:08,125 INFO L462 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2019-10-13 19:51:08,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2019-10-13 19:51:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:08,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:08,134 INFO L380 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] [2019-10-13 19:51:08,134 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash -676620532, now seen corresponding path program 1 times [2019-10-13 19:51:08,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:08,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146746540] [2019-10-13 19:51:08,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:08,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:08,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:08,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146746540] [2019-10-13 19:51:08,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:08,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:08,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404783504] [2019-10-13 19:51:08,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:08,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:08,400 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand 10 states. [2019-10-13 19:51:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:10,206 INFO L93 Difference]: Finished difference Result 696 states and 1012 transitions. [2019-10-13 19:51:10,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:51:10,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2019-10-13 19:51:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:10,211 INFO L225 Difference]: With dead ends: 696 [2019-10-13 19:51:10,212 INFO L226 Difference]: Without dead ends: 471 [2019-10-13 19:51:10,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:51:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-13 19:51:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 296. [2019-10-13 19:51:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-10-13 19:51:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2019-10-13 19:51:10,256 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 77 [2019-10-13 19:51:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:10,257 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2019-10-13 19:51:10,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2019-10-13 19:51:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:10,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:10,259 INFO L380 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] [2019-10-13 19:51:10,259 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 758526605, now seen corresponding path program 1 times [2019-10-13 19:51:10,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:10,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462382427] [2019-10-13 19:51:10,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:10,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:10,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:10,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462382427] [2019-10-13 19:51:10,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:10,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:10,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383215235] [2019-10-13 19:51:10,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:10,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:10,431 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 10 states. [2019-10-13 19:51:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:11,855 INFO L93 Difference]: Finished difference Result 718 states and 955 transitions. [2019-10-13 19:51:11,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:51:11,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2019-10-13 19:51:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:11,860 INFO L225 Difference]: With dead ends: 718 [2019-10-13 19:51:11,860 INFO L226 Difference]: Without dead ends: 442 [2019-10-13 19:51:11,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:51:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2019-10-13 19:51:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2019-10-13 19:51:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-13 19:51:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2019-10-13 19:51:11,894 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 77 [2019-10-13 19:51:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:11,895 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2019-10-13 19:51:11,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2019-10-13 19:51:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:11,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:11,897 INFO L380 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] [2019-10-13 19:51:11,897 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -613280693, now seen corresponding path program 1 times [2019-10-13 19:51:11,898 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:11,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200774334] [2019-10-13 19:51:11,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:11,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:11,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:12,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200774334] [2019-10-13 19:51:12,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:12,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:12,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292273549] [2019-10-13 19:51:12,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:12,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:12,102 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand 10 states. [2019-10-13 19:51:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:13,414 INFO L93 Difference]: Finished difference Result 748 states and 981 transitions. [2019-10-13 19:51:13,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:51:13,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2019-10-13 19:51:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:13,418 INFO L225 Difference]: With dead ends: 748 [2019-10-13 19:51:13,419 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 19:51:13,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:51:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 19:51:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 326. [2019-10-13 19:51:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-10-13 19:51:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2019-10-13 19:51:13,450 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 77 [2019-10-13 19:51:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:13,451 INFO L462 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2019-10-13 19:51:13,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2019-10-13 19:51:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:13,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:13,453 INFO L380 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] [2019-10-13 19:51:13,453 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:13,453 INFO L82 PathProgramCache]: Analyzing trace with hash 88319181, now seen corresponding path program 1 times [2019-10-13 19:51:13,453 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:13,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154020990] [2019-10-13 19:51:13,454 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:13,454 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:13,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:13,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154020990] [2019-10-13 19:51:13,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:13,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:13,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99212215] [2019-10-13 19:51:13,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:13,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:13,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:13,610 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand 10 states. [2019-10-13 19:51:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:15,071 INFO L93 Difference]: Finished difference Result 894 states and 1170 transitions. [2019-10-13 19:51:15,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:51:15,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2019-10-13 19:51:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:15,078 INFO L225 Difference]: With dead ends: 894 [2019-10-13 19:51:15,079 INFO L226 Difference]: Without dead ends: 587 [2019-10-13 19:51:15,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:51:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2019-10-13 19:51:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 362. [2019-10-13 19:51:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-10-13 19:51:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 422 transitions. [2019-10-13 19:51:15,120 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 422 transitions. Word has length 77 [2019-10-13 19:51:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:15,120 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 422 transitions. [2019-10-13 19:51:15,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 422 transitions. [2019-10-13 19:51:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 19:51:15,122 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:15,122 INFO L380 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] [2019-10-13 19:51:15,122 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash 228867791, now seen corresponding path program 1 times [2019-10-13 19:51:15,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:15,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394663152] [2019-10-13 19:51:15,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:15,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:15,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:15,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394663152] [2019-10-13 19:51:15,265 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:15,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:51:15,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103759050] [2019-10-13 19:51:15,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:51:15,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:15,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:51:15,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:51:15,268 INFO L87 Difference]: Start difference. First operand 362 states and 422 transitions. Second operand 7 states. [2019-10-13 19:51:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:16,553 INFO L93 Difference]: Finished difference Result 1180 states and 1487 transitions. [2019-10-13 19:51:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:51:16,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-10-13 19:51:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:16,559 INFO L225 Difference]: With dead ends: 1180 [2019-10-13 19:51:16,560 INFO L226 Difference]: Without dead ends: 838 [2019-10-13 19:51:16,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:51:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2019-10-13 19:51:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 736. [2019-10-13 19:51:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2019-10-13 19:51:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 896 transitions. [2019-10-13 19:51:16,628 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 896 transitions. Word has length 77 [2019-10-13 19:51:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:16,629 INFO L462 AbstractCegarLoop]: Abstraction has 736 states and 896 transitions. [2019-10-13 19:51:16,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:51:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 896 transitions. [2019-10-13 19:51:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 19:51:16,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:16,632 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-10-13 19:51:16,632 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:16,633 INFO L82 PathProgramCache]: Analyzing trace with hash -208124888, now seen corresponding path program 1 times [2019-10-13 19:51:16,633 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:16,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728129948] [2019-10-13 19:51:16,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:16,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:16,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:51:16,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728129948] [2019-10-13 19:51:16,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27362573] [2019-10-13 19:51:16,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:51:17,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:51:17,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:17,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-10-13 19:51:17,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621160779] [2019-10-13 19:51:17,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:17,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:17,238 INFO L87 Difference]: Start difference. First operand 736 states and 896 transitions. Second operand 3 states. [2019-10-13 19:51:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:17,362 INFO L93 Difference]: Finished difference Result 1991 states and 2522 transitions. [2019-10-13 19:51:17,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:17,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 19:51:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:17,373 INFO L225 Difference]: With dead ends: 1991 [2019-10-13 19:51:17,373 INFO L226 Difference]: Without dead ends: 1276 [2019-10-13 19:51:17,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2019-10-13 19:51:17,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1273. [2019-10-13 19:51:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2019-10-13 19:51:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1595 transitions. [2019-10-13 19:51:17,489 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1595 transitions. Word has length 121 [2019-10-13 19:51:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:17,490 INFO L462 AbstractCegarLoop]: Abstraction has 1273 states and 1595 transitions. [2019-10-13 19:51:17,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1595 transitions. [2019-10-13 19:51:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 19:51:17,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:17,494 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:17,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:17,701 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:17,702 INFO L82 PathProgramCache]: Analyzing trace with hash -232182619, now seen corresponding path program 1 times [2019-10-13 19:51:17,702 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:17,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060514001] [2019-10-13 19:51:17,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:17,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:17,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 19:51:17,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060514001] [2019-10-13 19:51:17,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214673415] [2019-10-13 19:51:17,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:17,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:51:18,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:51:18,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:18,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2019-10-13 19:51:18,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296654053] [2019-10-13 19:51:18,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:18,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:18,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:51:18,047 INFO L87 Difference]: Start difference. First operand 1273 states and 1595 transitions. Second operand 3 states. [2019-10-13 19:51:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:18,236 INFO L93 Difference]: Finished difference Result 3443 states and 4567 transitions. [2019-10-13 19:51:18,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:18,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2019-10-13 19:51:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:18,252 INFO L225 Difference]: With dead ends: 3443 [2019-10-13 19:51:18,253 INFO L226 Difference]: Without dead ends: 2196 [2019-10-13 19:51:18,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:51:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2019-10-13 19:51:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2196. [2019-10-13 19:51:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-10-13 19:51:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2827 transitions. [2019-10-13 19:51:18,528 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2827 transitions. Word has length 139 [2019-10-13 19:51:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:18,530 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2827 transitions. [2019-10-13 19:51:18,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2827 transitions. [2019-10-13 19:51:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 19:51:18,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:18,539 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:18,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:18,743 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1154717485, now seen corresponding path program 1 times [2019-10-13 19:51:18,745 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:18,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948292441] [2019-10-13 19:51:18,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:18,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:18,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 19:51:19,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948292441] [2019-10-13 19:51:19,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672786114] [2019-10-13 19:51:19,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 19:51:19,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:51:19,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:19,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [17] total 18 [2019-10-13 19:51:19,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755851964] [2019-10-13 19:51:19,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:19,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:51:19,271 INFO L87 Difference]: Start difference. First operand 2196 states and 2827 transitions. Second operand 3 states. [2019-10-13 19:51:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:19,458 INFO L93 Difference]: Finished difference Result 4355 states and 5705 transitions. [2019-10-13 19:51:19,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:19,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-13 19:51:19,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:19,471 INFO L225 Difference]: With dead ends: 4355 [2019-10-13 19:51:19,472 INFO L226 Difference]: Without dead ends: 1733 [2019-10-13 19:51:19,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:51:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2019-10-13 19:51:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2019-10-13 19:51:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2019-10-13 19:51:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2126 transitions. [2019-10-13 19:51:19,673 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2126 transitions. Word has length 140 [2019-10-13 19:51:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:19,673 INFO L462 AbstractCegarLoop]: Abstraction has 1733 states and 2126 transitions. [2019-10-13 19:51:19,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2126 transitions. [2019-10-13 19:51:19,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:51:19,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:19,678 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:19,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:19,892 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:19,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1360925018, now seen corresponding path program 1 times [2019-10-13 19:51:19,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:19,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716676382] [2019-10-13 19:51:19,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:19,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:19,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 19:51:20,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716676382] [2019-10-13 19:51:20,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073768712] [2019-10-13 19:51:20,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:20,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:51:20,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:51:20,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:20,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2019-10-13 19:51:20,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364604076] [2019-10-13 19:51:20,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:20,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:20,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:20,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:20,324 INFO L87 Difference]: Start difference. First operand 1733 states and 2126 transitions. Second operand 3 states. [2019-10-13 19:51:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:20,535 INFO L93 Difference]: Finished difference Result 4286 states and 5600 transitions. [2019-10-13 19:51:20,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:20,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-13 19:51:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:20,551 INFO L225 Difference]: With dead ends: 4286 [2019-10-13 19:51:20,551 INFO L226 Difference]: Without dead ends: 2579 [2019-10-13 19:51:20,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2019-10-13 19:51:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2573. [2019-10-13 19:51:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2019-10-13 19:51:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3150 transitions. [2019-10-13 19:51:20,765 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3150 transitions. Word has length 156 [2019-10-13 19:51:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:20,766 INFO L462 AbstractCegarLoop]: Abstraction has 2573 states and 3150 transitions. [2019-10-13 19:51:20,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3150 transitions. [2019-10-13 19:51:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:51:20,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:20,771 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:20,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:20,983 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:20,984 INFO L82 PathProgramCache]: Analyzing trace with hash -216837778, now seen corresponding path program 1 times [2019-10-13 19:51:20,984 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:20,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528799748] [2019-10-13 19:51:20,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:20,985 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:20,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 19:51:21,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528799748] [2019-10-13 19:51:21,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365680317] [2019-10-13 19:51:21,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:21,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 19:51:21,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 19:51:21,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:21,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2019-10-13 19:51:21,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084773761] [2019-10-13 19:51:21,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:21,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:21,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:21,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:51:21,402 INFO L87 Difference]: Start difference. First operand 2573 states and 3150 transitions. Second operand 3 states. [2019-10-13 19:51:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:21,611 INFO L93 Difference]: Finished difference Result 4250 states and 5200 transitions. [2019-10-13 19:51:21,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:21,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 19:51:21,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:21,629 INFO L225 Difference]: With dead ends: 4250 [2019-10-13 19:51:21,629 INFO L226 Difference]: Without dead ends: 2571 [2019-10-13 19:51:21,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:51:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2019-10-13 19:51:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2571. [2019-10-13 19:51:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2019-10-13 19:51:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3072 transitions. [2019-10-13 19:51:21,907 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3072 transitions. Word has length 158 [2019-10-13 19:51:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:21,910 INFO L462 AbstractCegarLoop]: Abstraction has 2571 states and 3072 transitions. [2019-10-13 19:51:21,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3072 transitions. [2019-10-13 19:51:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 19:51:21,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:21,918 INFO L380 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, 3, 3, 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] [2019-10-13 19:51:22,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:22,124 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:22,125 INFO L82 PathProgramCache]: Analyzing trace with hash -797989467, now seen corresponding path program 1 times [2019-10-13 19:51:22,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:22,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692800864] [2019-10-13 19:51:22,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:22,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:22,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 19:51:22,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692800864] [2019-10-13 19:51:22,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850541428] [2019-10-13 19:51:22,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:22,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 19:51:22,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 19:51:22,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:51:22,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2019-10-13 19:51:22,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576234859] [2019-10-13 19:51:22,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:51:22,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:22,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:51:22,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:22,551 INFO L87 Difference]: Start difference. First operand 2571 states and 3072 transitions. Second operand 3 states. [2019-10-13 19:51:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:22,731 INFO L93 Difference]: Finished difference Result 4054 states and 4843 transitions. [2019-10-13 19:51:22,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:51:22,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2019-10-13 19:51:22,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:22,739 INFO L225 Difference]: With dead ends: 4054 [2019-10-13 19:51:22,739 INFO L226 Difference]: Without dead ends: 952 [2019-10-13 19:51:22,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-10-13 19:51:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2019-10-13 19:51:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-13 19:51:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1068 transitions. [2019-10-13 19:51:22,836 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1068 transitions. Word has length 176 [2019-10-13 19:51:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:22,836 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 1068 transitions. [2019-10-13 19:51:22,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:51:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1068 transitions. [2019-10-13 19:51:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 19:51:22,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:22,840 INFO L380 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, 3, 3, 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] [2019-10-13 19:51:23,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:23,043 INFO L410 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash -421514357, now seen corresponding path program 1 times [2019-10-13 19:51:23,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:23,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298137484] [2019-10-13 19:51:23,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:23,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:23,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-10-13 19:51:23,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298137484] [2019-10-13 19:51:23,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249336457] [2019-10-13 19:51:23,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-13 19:51:23,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 23 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:51:23,537 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:51:23,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 12 [2019-10-13 19:51:23,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241646085] [2019-10-13 19:51:23,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:51:23,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:51:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:51:23,539 INFO L87 Difference]: Start difference. First operand 952 states and 1068 transitions. Second operand 12 states. [2019-10-13 19:51:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:25,645 INFO L93 Difference]: Finished difference Result 1204 states and 1382 transitions. [2019-10-13 19:51:25,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:51:25,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2019-10-13 19:51:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:25,647 INFO L225 Difference]: With dead ends: 1204 [2019-10-13 19:51:25,647 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:51:25,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2019-10-13 19:51:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:51:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:51:25,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:51:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:51:25,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2019-10-13 19:51:25,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:25,652 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:51:25,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:51:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:51:25,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:51:25,853 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:25,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:51:26,400 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2019-10-13 19:51:26,538 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2019-10-13 19:51:26,690 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2019-10-13 19:51:26,795 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93