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.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:50:23,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:50:23,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:50:23,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:50:23,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:50:23,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:50:23,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:50:23,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:50:23,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:50:23,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:50:23,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:50:23,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:50:23,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:50:23,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:50:23,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:50:23,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:50:23,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:50:23,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:50:23,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:50:23,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:50:23,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:50:23,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:50:23,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:50:23,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:50:23,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:50:23,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:50:23,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:50:23,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:50:23,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:50:23,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:50:23,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:50:23,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:50:23,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:50:23,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:50:23,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:50:23,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:50:23,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:50:23,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:50:23,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:50:23,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:50:23,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:50:23,625 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 [2019-10-14 23:50:23,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:50:23,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:50:23,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:50:23,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:50:23,640 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:50:23,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:50:23,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:50:23,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:50:23,642 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:50:23,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:50:23,642 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:50:23,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:50:23,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:50:23,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:50:23,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:50:23,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:50:23,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:50:23,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:50:23,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:50:23,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:50:23,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:50:23,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:50:23,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:50:23,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:50:23,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:50:23,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:50:23,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:50:23,953 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:50:23,954 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:50:23,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2019-10-14 23:50:24,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf8e7312/fb7dcd90b44e4ccd9ad47356bb0de12d/FLAG5355dd5a8 [2019-10-14 23:50:24,506 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:50:24,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2019-10-14 23:50:24,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf8e7312/fb7dcd90b44e4ccd9ad47356bb0de12d/FLAG5355dd5a8 [2019-10-14 23:50:24,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf8e7312/fb7dcd90b44e4ccd9ad47356bb0de12d [2019-10-14 23:50:24,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:50:24,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:50:24,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:50:24,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:50:24,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:50:24,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:24" (1/1) ... [2019-10-14 23:50:24,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2c86bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:24, skipping insertion in model container [2019-10-14 23:50:24,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:24" (1/1) ... [2019-10-14 23:50:24,868 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:50:24,914 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:50:25,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:50:25,274 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:50:25,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:50:25,447 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:50:25,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25 WrapperNode [2019-10-14 23:50:25,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:50:25,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:50:25,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:50:25,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:50:25,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (1/1) ... [2019-10-14 23:50:25,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:50:25,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:50:25,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:50:25,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:50:25,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (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 [2019-10-14 23:50:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2019-10-14 23:50:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2019-10-14 23:50:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-14 23:50:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-14 23:50:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-14 23:50:25,574 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-14 23:50:25,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:50:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:50:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-14 23:50:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-14 23:50:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2019-10-14 23:50:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-14 23:50:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:50:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:50:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:50:26,341 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:50:26,342 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-14 23:50:26,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:26 BoogieIcfgContainer [2019-10-14 23:50:26,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:50:26,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:50:26,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:50:26,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:50:26,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:50:24" (1/3) ... [2019-10-14 23:50:26,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534d40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:26, skipping insertion in model container [2019-10-14 23:50:26,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:25" (2/3) ... [2019-10-14 23:50:26,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534d40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:26, skipping insertion in model container [2019-10-14 23:50:26,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:26" (3/3) ... [2019-10-14 23:50:26,353 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-2.c [2019-10-14 23:50:26,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:50:26,371 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:50:26,383 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:50:26,410 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:50:26,410 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:50:26,410 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:50:26,411 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:50:26,411 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:50:26,411 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:50:26,411 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:50:26,411 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:50:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states. [2019-10-14 23:50:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:26,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:26,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:26,452 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1526033595, now seen corresponding path program 1 times [2019-10-14 23:50:26,465 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:26,465 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145428198] [2019-10-14 23:50:26,465 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:26,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:26,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,867 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-10-14 23:50:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:27,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145428198] [2019-10-14 23:50:27,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:27,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:50:27,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505028149] [2019-10-14 23:50:27,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:50:27,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:50:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:50:27,177 INFO L87 Difference]: Start difference. First operand 241 states. Second operand 8 states. [2019-10-14 23:50:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:30,194 INFO L93 Difference]: Finished difference Result 602 states and 952 transitions. [2019-10-14 23:50:30,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:50:30,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2019-10-14 23:50:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:30,214 INFO L225 Difference]: With dead ends: 602 [2019-10-14 23:50:30,215 INFO L226 Difference]: Without dead ends: 365 [2019-10-14 23:50:30,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:50:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2019-10-14 23:50:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 232. [2019-10-14 23:50:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-10-14 23:50:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 326 transitions. [2019-10-14 23:50:30,326 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 326 transitions. Word has length 120 [2019-10-14 23:50:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:30,327 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 326 transitions. [2019-10-14 23:50:30,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:50:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 326 transitions. [2019-10-14 23:50:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:30,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:30,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:30,340 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:30,342 INFO L82 PathProgramCache]: Analyzing trace with hash -735539655, now seen corresponding path program 1 times [2019-10-14 23:50:30,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:30,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250680063] [2019-10-14 23:50:30,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:30,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:30,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:30,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250680063] [2019-10-14 23:50:30,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:30,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:50:30,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525535846] [2019-10-14 23:50:30,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:50:30,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:50:30,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:50:30,829 INFO L87 Difference]: Start difference. First operand 232 states and 326 transitions. Second operand 9 states. [2019-10-14 23:50:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:34,715 INFO L93 Difference]: Finished difference Result 878 states and 1309 transitions. [2019-10-14 23:50:34,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:50:34,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2019-10-14 23:50:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:34,725 INFO L225 Difference]: With dead ends: 878 [2019-10-14 23:50:34,725 INFO L226 Difference]: Without dead ends: 668 [2019-10-14 23:50:34,728 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:50:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2019-10-14 23:50:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 440. [2019-10-14 23:50:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-14 23:50:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 627 transitions. [2019-10-14 23:50:34,838 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 627 transitions. Word has length 120 [2019-10-14 23:50:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:34,839 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 627 transitions. [2019-10-14 23:50:34,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:50:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 627 transitions. [2019-10-14 23:50:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:34,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:34,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:34,842 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 258713141, now seen corresponding path program 1 times [2019-10-14 23:50:34,843 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:34,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495309362] [2019-10-14 23:50:34,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:34,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:34,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:35,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495309362] [2019-10-14 23:50:35,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:35,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:35,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083732698] [2019-10-14 23:50:35,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:35,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:35,182 INFO L87 Difference]: Start difference. First operand 440 states and 627 transitions. Second operand 10 states. [2019-10-14 23:50:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:37,218 INFO L93 Difference]: Finished difference Result 1080 states and 1605 transitions. [2019-10-14 23:50:37,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:50:37,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:37,230 INFO L225 Difference]: With dead ends: 1080 [2019-10-14 23:50:37,230 INFO L226 Difference]: Without dead ends: 662 [2019-10-14 23:50:37,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:50:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2019-10-14 23:50:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 440. [2019-10-14 23:50:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-14 23:50:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 620 transitions. [2019-10-14 23:50:37,304 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 620 transitions. Word has length 120 [2019-10-14 23:50:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:37,304 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 620 transitions. [2019-10-14 23:50:37,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 620 transitions. [2019-10-14 23:50:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:37,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:37,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:37,308 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1085502159, now seen corresponding path program 1 times [2019-10-14 23:50:37,308 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:37,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926548034] [2019-10-14 23:50:37,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:37,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:37,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:37,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926548034] [2019-10-14 23:50:37,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:37,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:37,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506108928] [2019-10-14 23:50:37,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:37,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:37,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:37,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:37,597 INFO L87 Difference]: Start difference. First operand 440 states and 620 transitions. Second operand 10 states. [2019-10-14 23:50:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:40,172 INFO L93 Difference]: Finished difference Result 1080 states and 1587 transitions. [2019-10-14 23:50:40,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:50:40,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:40,179 INFO L225 Difference]: With dead ends: 1080 [2019-10-14 23:50:40,179 INFO L226 Difference]: Without dead ends: 662 [2019-10-14 23:50:40,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:50:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2019-10-14 23:50:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 440. [2019-10-14 23:50:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-14 23:50:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 613 transitions. [2019-10-14 23:50:40,245 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 613 transitions. Word has length 120 [2019-10-14 23:50:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:40,245 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 613 transitions. [2019-10-14 23:50:40,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 613 transitions. [2019-10-14 23:50:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:40,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:40,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:40,248 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1969011149, now seen corresponding path program 1 times [2019-10-14 23:50:40,249 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:40,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646762970] [2019-10-14 23:50:40,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:40,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:40,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:40,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646762970] [2019-10-14 23:50:40,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:40,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:40,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938667273] [2019-10-14 23:50:40,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:40,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:40,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:40,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:40,588 INFO L87 Difference]: Start difference. First operand 440 states and 613 transitions. Second operand 10 states. [2019-10-14 23:50:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:43,037 INFO L93 Difference]: Finished difference Result 1080 states and 1569 transitions. [2019-10-14 23:50:43,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:50:43,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:43,042 INFO L225 Difference]: With dead ends: 1080 [2019-10-14 23:50:43,043 INFO L226 Difference]: Without dead ends: 662 [2019-10-14 23:50:43,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:50:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2019-10-14 23:50:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 440. [2019-10-14 23:50:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-14 23:50:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 606 transitions. [2019-10-14 23:50:43,107 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 606 transitions. Word has length 120 [2019-10-14 23:50:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:43,108 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 606 transitions. [2019-10-14 23:50:43,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:43,108 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 606 transitions. [2019-10-14 23:50:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:43,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:43,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:43,110 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1974879185, now seen corresponding path program 1 times [2019-10-14 23:50:43,111 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:43,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185699876] [2019-10-14 23:50:43,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:43,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:43,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:43,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185699876] [2019-10-14 23:50:43,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:43,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:43,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111540357] [2019-10-14 23:50:43,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:43,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:43,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:43,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:43,374 INFO L87 Difference]: Start difference. First operand 440 states and 606 transitions. Second operand 10 states. [2019-10-14 23:50:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:46,736 INFO L93 Difference]: Finished difference Result 1299 states and 1947 transitions. [2019-10-14 23:50:46,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:50:46,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:46,744 INFO L225 Difference]: With dead ends: 1299 [2019-10-14 23:50:46,745 INFO L226 Difference]: Without dead ends: 881 [2019-10-14 23:50:46,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:50:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-14 23:50:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 552. [2019-10-14 23:50:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2019-10-14 23:50:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 737 transitions. [2019-10-14 23:50:46,820 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 737 transitions. Word has length 120 [2019-10-14 23:50:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:46,821 INFO L462 AbstractCegarLoop]: Abstraction has 552 states and 737 transitions. [2019-10-14 23:50:46,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 737 transitions. [2019-10-14 23:50:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:46,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:46,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:46,828 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1512329902, now seen corresponding path program 1 times [2019-10-14 23:50:46,831 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:46,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271703597] [2019-10-14 23:50:46,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:46,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:46,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:47,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271703597] [2019-10-14 23:50:47,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:47,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:47,083 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141292025] [2019-10-14 23:50:47,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:47,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:47,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:47,084 INFO L87 Difference]: Start difference. First operand 552 states and 737 transitions. Second operand 10 states. [2019-10-14 23:50:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:50,313 INFO L93 Difference]: Finished difference Result 1555 states and 2257 transitions. [2019-10-14 23:50:50,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:50:50,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:50,321 INFO L225 Difference]: With dead ends: 1555 [2019-10-14 23:50:50,322 INFO L226 Difference]: Without dead ends: 1025 [2019-10-14 23:50:50,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:50:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-10-14 23:50:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 664. [2019-10-14 23:50:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-14 23:50:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 864 transitions. [2019-10-14 23:50:50,404 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 864 transitions. Word has length 120 [2019-10-14 23:50:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:50,405 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 864 transitions. [2019-10-14 23:50:50,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 864 transitions. [2019-10-14 23:50:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:50,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:50,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:50,407 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash -144739762, now seen corresponding path program 1 times [2019-10-14 23:50:50,408 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:50,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324149898] [2019-10-14 23:50:50,408 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:50,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:50,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:50,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324149898] [2019-10-14 23:50:50,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:50,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:50,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332066106] [2019-10-14 23:50:50,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:50,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:50,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:50,671 INFO L87 Difference]: Start difference. First operand 664 states and 864 transitions. Second operand 10 states. [2019-10-14 23:50:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:53,796 INFO L93 Difference]: Finished difference Result 1811 states and 2557 transitions. [2019-10-14 23:50:53,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:50:53,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:53,807 INFO L225 Difference]: With dead ends: 1811 [2019-10-14 23:50:53,807 INFO L226 Difference]: Without dead ends: 1169 [2019-10-14 23:50:53,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:50:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-14 23:50:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 776. [2019-10-14 23:50:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-10-14 23:50:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 987 transitions. [2019-10-14 23:50:53,915 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 987 transitions. Word has length 120 [2019-10-14 23:50:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:53,916 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 987 transitions. [2019-10-14 23:50:53,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 987 transitions. [2019-10-14 23:50:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:53,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:53,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:53,919 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1007754706, now seen corresponding path program 1 times [2019-10-14 23:50:53,920 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:53,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194520590] [2019-10-14 23:50:53,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:53,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:53,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:54,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194520590] [2019-10-14 23:50:54,194 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:54,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:54,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964085677] [2019-10-14 23:50:54,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:54,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:54,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:54,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:54,195 INFO L87 Difference]: Start difference. First operand 776 states and 987 transitions. Second operand 10 states. [2019-10-14 23:50:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:50:57,251 INFO L93 Difference]: Finished difference Result 2067 states and 2849 transitions. [2019-10-14 23:50:57,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:50:57,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:50:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:50:57,258 INFO L225 Difference]: With dead ends: 2067 [2019-10-14 23:50:57,259 INFO L226 Difference]: Without dead ends: 1313 [2019-10-14 23:50:57,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:50:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-14 23:50:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 888. [2019-10-14 23:50:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-10-14 23:50:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1106 transitions. [2019-10-14 23:50:57,362 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1106 transitions. Word has length 120 [2019-10-14 23:50:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:50:57,363 INFO L462 AbstractCegarLoop]: Abstraction has 888 states and 1106 transitions. [2019-10-14 23:50:57,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:50:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1106 transitions. [2019-10-14 23:50:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:50:57,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:50:57,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:50:57,365 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:50:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:50:57,365 INFO L82 PathProgramCache]: Analyzing trace with hash 75100622, now seen corresponding path program 1 times [2019-10-14 23:50:57,365 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:50:57,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416891775] [2019-10-14 23:50:57,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:57,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:50:57,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:50:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:50:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:50:57,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416891775] [2019-10-14 23:50:57,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:50:57,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:50:57,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902321349] [2019-10-14 23:50:57,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:50:57,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:50:57,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:50:57,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:50:57,619 INFO L87 Difference]: Start difference. First operand 888 states and 1106 transitions. Second operand 10 states. [2019-10-14 23:51:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:00,847 INFO L93 Difference]: Finished difference Result 2111 states and 2760 transitions. [2019-10-14 23:51:00,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:51:00,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2019-10-14 23:51:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:00,855 INFO L225 Difference]: With dead ends: 2111 [2019-10-14 23:51:00,855 INFO L226 Difference]: Without dead ends: 1246 [2019-10-14 23:51:00,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:51:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2019-10-14 23:51:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 898. [2019-10-14 23:51:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2019-10-14 23:51:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1108 transitions. [2019-10-14 23:51:00,982 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1108 transitions. Word has length 120 [2019-10-14 23:51:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:00,983 INFO L462 AbstractCegarLoop]: Abstraction has 898 states and 1108 transitions. [2019-10-14 23:51:00,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:51:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1108 transitions. [2019-10-14 23:51:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:51:00,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:00,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:00,986 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash 962323468, now seen corresponding path program 1 times [2019-10-14 23:51:00,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:51:00,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80759249] [2019-10-14 23:51:00,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:00,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:00,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:01,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80759249] [2019-10-14 23:51:01,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:01,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:51:01,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915697876] [2019-10-14 23:51:01,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:51:01,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:51:01,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:51:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:51:01,278 INFO L87 Difference]: Start difference. First operand 898 states and 1108 transitions. Second operand 10 states.