/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:06:30,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:06:30,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:06:30,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:06:30,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:06:30,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:06:30,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:06:30,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:06:30,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:06:30,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:06:30,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:06:30,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:06:30,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:06:30,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:06:30,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:06:30,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:06:30,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:06:30,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:06:30,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:06:30,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:06:30,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:06:30,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:06:30,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:06:30,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:06:30,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 14:06:30,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 14:06:30,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 14:06:30,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 14:06:30,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 14:06:30,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 14:06:30,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 14:06:30,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 14:06:30,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 14:06:30,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 14:06:30,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 14:06:30,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 14:06:30,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 14:06:30,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 14:06:30,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:06:30,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:06:30,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:06:30,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:06:30,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:06:30,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:06:30,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:06:30,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:06:30,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:06:30,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:06:30,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:06:30,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:06:30,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:06:30,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:06:30,693 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:06:30,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:06:30,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:06:30,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:06:30,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:06:30,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:06:30,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:06:30,694 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:06:30,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:06:30,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:06:30,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:06:30,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:06:30,996 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:06:30,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-07-07 14:06:31,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9bfb1a4/bcfc0f8db7f44afd9e83c2e5955dfa8b/FLAGb2711a28b [2020-07-07 14:06:31,589 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:06:31,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-07-07 14:06:31,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9bfb1a4/bcfc0f8db7f44afd9e83c2e5955dfa8b/FLAGb2711a28b [2020-07-07 14:06:31,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9bfb1a4/bcfc0f8db7f44afd9e83c2e5955dfa8b [2020-07-07 14:06:31,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:06:31,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:06:31,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:06:31,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:06:31,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:06:31,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:06:31" (1/1) ... [2020-07-07 14:06:31,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581710b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:31, skipping insertion in model container [2020-07-07 14:06:31,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:06:31" (1/1) ... [2020-07-07 14:06:31,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:06:32,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:06:32,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:06:32,232 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:06:32,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:06:32,392 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:06:32,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32 WrapperNode [2020-07-07 14:06:32,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:06:32,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:06:32,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:06:32,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:06:32,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... [2020-07-07 14:06:32,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:06:32,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:06:32,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:06:32,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:06:32,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:06:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:06:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:06:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-07-07 14:06:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-07-07 14:06:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-07-07 14:06:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-07-07 14:06:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-07-07 14:06:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-07-07 14:06:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-07-07 14:06:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-07-07 14:06:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-07-07 14:06:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-07-07 14:06:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-07-07 14:06:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-07-07 14:06:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:06:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:06:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-07-07 14:06:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-07-07 14:06:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-07-07 14:06:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-07-07 14:06:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:06:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-07-07 14:06:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-07-07 14:06:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-07-07 14:06:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-07-07 14:06:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:06:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:06:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:06:33,128 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:06:33,129 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 14:06:33,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:06:33 BoogieIcfgContainer [2020-07-07 14:06:33,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:06:33,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:06:33,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:06:33,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:06:33,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:06:31" (1/3) ... [2020-07-07 14:06:33,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4fb48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:06:33, skipping insertion in model container [2020-07-07 14:06:33,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:32" (2/3) ... [2020-07-07 14:06:33,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4fb48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:06:33, skipping insertion in model container [2020-07-07 14:06:33,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:06:33" (3/3) ... [2020-07-07 14:06:33,146 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-07-07 14:06:33,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:06:33,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:06:33,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:06:33,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:06:33,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:06:33,213 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:06:33,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:06:33,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:06:33,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:06:33,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:06:33,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:06:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-07-07 14:06:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-07 14:06:33,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:33,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:33,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:33,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:33,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1293744950, now seen corresponding path program 1 times [2020-07-07 14:06:33,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:33,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050115874] [2020-07-07 14:06:33,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:33,902 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:33,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050115874] [2020-07-07 14:06:33,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:33,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 14:06:33,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839523682] [2020-07-07 14:06:33,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 14:06:33,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:33,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 14:06:33,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 14:06:33,939 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 7 states. [2020-07-07 14:06:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:36,128 INFO L93 Difference]: Finished difference Result 795 states and 1083 transitions. [2020-07-07 14:06:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 14:06:36,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-07-07 14:06:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:36,166 INFO L225 Difference]: With dead ends: 795 [2020-07-07 14:06:36,166 INFO L226 Difference]: Without dead ends: 585 [2020-07-07 14:06:36,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-07-07 14:06:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-07-07 14:06:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 431. [2020-07-07 14:06:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-07-07 14:06:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 538 transitions. [2020-07-07 14:06:36,352 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 538 transitions. Word has length 110 [2020-07-07 14:06:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:36,354 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 538 transitions. [2020-07-07 14:06:36,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 14:06:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 538 transitions. [2020-07-07 14:06:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-07-07 14:06:36,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:36,383 INFO L422 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:36,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:06:36,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:36,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1206698500, now seen corresponding path program 1 times [2020-07-07 14:06:36,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:36,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171724422] [2020-07-07 14:06:36,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-07 14:06:36,866 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:36,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171724422] [2020-07-07 14:06:36,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:36,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:06:36,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39393238] [2020-07-07 14:06:36,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:06:36,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:36,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:06:36,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:06:36,870 INFO L87 Difference]: Start difference. First operand 431 states and 538 transitions. Second operand 9 states. [2020-07-07 14:06:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:39,960 INFO L93 Difference]: Finished difference Result 1528 states and 2039 transitions. [2020-07-07 14:06:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:06:39,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-07-07 14:06:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:39,978 INFO L225 Difference]: With dead ends: 1528 [2020-07-07 14:06:39,978 INFO L226 Difference]: Without dead ends: 1137 [2020-07-07 14:06:39,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:06:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-07-07 14:06:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 847. [2020-07-07 14:06:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-07-07 14:06:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1093 transitions. [2020-07-07 14:06:40,120 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1093 transitions. Word has length 176 [2020-07-07 14:06:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:40,121 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1093 transitions. [2020-07-07 14:06:40,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:06:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1093 transitions. [2020-07-07 14:06:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-07-07 14:06:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:40,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:40,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:06:40,132 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1703508036, now seen corresponding path program 1 times [2020-07-07 14:06:40,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:40,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041822375] [2020-07-07 14:06:40,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-07 14:06:40,607 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:40,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041822375] [2020-07-07 14:06:40,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:40,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:06:40,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231946374] [2020-07-07 14:06:40,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:06:40,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:06:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:06:40,614 INFO L87 Difference]: Start difference. First operand 847 states and 1093 transitions. Second operand 10 states. [2020-07-07 14:06:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:42,391 INFO L93 Difference]: Finished difference Result 1979 states and 2578 transitions. [2020-07-07 14:06:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 14:06:42,392 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2020-07-07 14:06:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:42,405 INFO L225 Difference]: With dead ends: 1979 [2020-07-07 14:06:42,405 INFO L226 Difference]: Without dead ends: 1170 [2020-07-07 14:06:42,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-07-07 14:06:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-07-07 14:06:42,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 838. [2020-07-07 14:06:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-07-07 14:06:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1078 transitions. [2020-07-07 14:06:42,630 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1078 transitions. Word has length 289 [2020-07-07 14:06:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:42,631 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 1078 transitions. [2020-07-07 14:06:42,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:06:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1078 transitions. [2020-07-07 14:06:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-07-07 14:06:42,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:42,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:42,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:06:42,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1912018981, now seen corresponding path program 1 times [2020-07-07 14:06:42,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:42,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166124380] [2020-07-07 14:06:42,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-07 14:06:43,052 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:43,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166124380] [2020-07-07 14:06:43,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:43,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:06:43,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295684983] [2020-07-07 14:06:43,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:06:43,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:43,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:06:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:06:43,061 INFO L87 Difference]: Start difference. First operand 838 states and 1078 transitions. Second operand 12 states. [2020-07-07 14:06:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:45,279 INFO L93 Difference]: Finished difference Result 1986 states and 2632 transitions. [2020-07-07 14:06:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 14:06:45,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2020-07-07 14:06:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:45,291 INFO L225 Difference]: With dead ends: 1986 [2020-07-07 14:06:45,291 INFO L226 Difference]: Without dead ends: 953 [2020-07-07 14:06:45,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:06:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-07-07 14:06:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 691. [2020-07-07 14:06:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-07 14:06:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 858 transitions. [2020-07-07 14:06:45,394 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 858 transitions. Word has length 226 [2020-07-07 14:06:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:45,396 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 858 transitions. [2020-07-07 14:06:45,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:06:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 858 transitions. [2020-07-07 14:06:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-07-07 14:06:45,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:45,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:45,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:06:45,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1527598382, now seen corresponding path program 2 times [2020-07-07 14:06:45,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:45,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892526593] [2020-07-07 14:06:45,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:45,796 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:45,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892526593] [2020-07-07 14:06:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:06:45,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496264965] [2020-07-07 14:06:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:06:45,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:06:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:06:45,800 INFO L87 Difference]: Start difference. First operand 691 states and 858 transitions. Second operand 10 states. [2020-07-07 14:06:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:48,777 INFO L93 Difference]: Finished difference Result 2333 states and 3090 transitions. [2020-07-07 14:06:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:06:48,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 225 [2020-07-07 14:06:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:48,789 INFO L225 Difference]: With dead ends: 2333 [2020-07-07 14:06:48,790 INFO L226 Difference]: Without dead ends: 1680 [2020-07-07 14:06:48,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-07-07 14:06:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-07-07 14:06:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1279. [2020-07-07 14:06:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-07-07 14:06:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1565 transitions. [2020-07-07 14:06:48,961 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1565 transitions. Word has length 225 [2020-07-07 14:06:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:48,961 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1565 transitions. [2020-07-07 14:06:48,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:06:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1565 transitions. [2020-07-07 14:06:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-07 14:06:48,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:48,970 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:48,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:06:48,971 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1201348035, now seen corresponding path program 1 times [2020-07-07 14:06:48,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:48,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27548103] [2020-07-07 14:06:48,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:49,268 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:49,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27548103] [2020-07-07 14:06:49,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:49,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:06:49,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329568824] [2020-07-07 14:06:49,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:06:49,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:06:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:06:49,273 INFO L87 Difference]: Start difference. First operand 1279 states and 1565 transitions. Second operand 9 states. [2020-07-07 14:06:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:51,656 INFO L93 Difference]: Finished difference Result 2930 states and 3716 transitions. [2020-07-07 14:06:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:06:51,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-07-07 14:06:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:51,672 INFO L225 Difference]: With dead ends: 2930 [2020-07-07 14:06:51,673 INFO L226 Difference]: Without dead ends: 1690 [2020-07-07 14:06:51,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:06:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-07-07 14:06:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1279. [2020-07-07 14:06:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-07-07 14:06:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1553 transitions. [2020-07-07 14:06:51,851 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1553 transitions. Word has length 254 [2020-07-07 14:06:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:51,852 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1553 transitions. [2020-07-07 14:06:51,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:06:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1553 transitions. [2020-07-07 14:06:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-07 14:06:51,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:51,859 INFO L422 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:51,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:06:51,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:51,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1453934466, now seen corresponding path program 1 times [2020-07-07 14:06:51,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:51,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351139982] [2020-07-07 14:06:51,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:52,195 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:52,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351139982] [2020-07-07 14:06:52,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:52,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:06:52,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803581288] [2020-07-07 14:06:52,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:06:52,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:06:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:06:52,198 INFO L87 Difference]: Start difference. First operand 1279 states and 1553 transitions. Second operand 10 states. [2020-07-07 14:06:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:55,257 INFO L93 Difference]: Finished difference Result 4387 states and 5560 transitions. [2020-07-07 14:06:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 14:06:55,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-07-07 14:06:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:55,278 INFO L225 Difference]: With dead ends: 4387 [2020-07-07 14:06:55,279 INFO L226 Difference]: Without dead ends: 3147 [2020-07-07 14:06:55,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:06:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2020-07-07 14:06:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2409. [2020-07-07 14:06:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-07-07 14:06:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 2950 transitions. [2020-07-07 14:06:55,683 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 2950 transitions. Word has length 254 [2020-07-07 14:06:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:55,683 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 2950 transitions. [2020-07-07 14:06:55,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:06:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 2950 transitions. [2020-07-07 14:06:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-07-07 14:06:55,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:55,694 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:55,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:06:55,695 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:55,695 INFO L82 PathProgramCache]: Analyzing trace with hash 564718689, now seen corresponding path program 1 times [2020-07-07 14:06:55,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:55,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090680741] [2020-07-07 14:06:55,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:56,167 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:56,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090680741] [2020-07-07 14:06:56,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:56,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:06:56,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919628345] [2020-07-07 14:06:56,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:06:56,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:56,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:06:56,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:06:56,173 INFO L87 Difference]: Start difference. First operand 2409 states and 2950 transitions. Second operand 14 states. [2020-07-07 14:07:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:00,102 INFO L93 Difference]: Finished difference Result 5356 states and 6878 transitions. [2020-07-07 14:07:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 14:07:00,102 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 260 [2020-07-07 14:07:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:00,122 INFO L225 Difference]: With dead ends: 5356 [2020-07-07 14:07:00,123 INFO L226 Difference]: Without dead ends: 2987 [2020-07-07 14:07:00,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=442, Invalid=1628, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 14:07:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-07-07 14:07:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2415. [2020-07-07 14:07:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2415 states. [2020-07-07 14:07:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 2906 transitions. [2020-07-07 14:07:00,611 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 2906 transitions. Word has length 260 [2020-07-07 14:07:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:00,612 INFO L479 AbstractCegarLoop]: Abstraction has 2415 states and 2906 transitions. [2020-07-07 14:07:00,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:07:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 2906 transitions. [2020-07-07 14:07:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-07-07 14:07:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:00,620 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:00,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:07:00,620 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -622546722, now seen corresponding path program 1 times [2020-07-07 14:07:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:00,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419579072] [2020-07-07 14:07:00,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:01,045 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:01,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419579072] [2020-07-07 14:07:01,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:01,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:07:01,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930473691] [2020-07-07 14:07:01,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:07:01,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:01,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:07:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:07:01,051 INFO L87 Difference]: Start difference. First operand 2415 states and 2906 transitions. Second operand 12 states. [2020-07-07 14:07:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:06,797 INFO L93 Difference]: Finished difference Result 7890 states and 9700 transitions. [2020-07-07 14:07:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 14:07:06,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2020-07-07 14:07:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:06,839 INFO L225 Difference]: With dead ends: 7890 [2020-07-07 14:07:06,839 INFO L226 Difference]: Without dead ends: 5519 [2020-07-07 14:07:06,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1308, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 14:07:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-07-07 14:07:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4386. [2020-07-07 14:07:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4386 states. [2020-07-07 14:07:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5308 transitions. [2020-07-07 14:07:08,244 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5308 transitions. Word has length 260 [2020-07-07 14:07:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:08,248 INFO L479 AbstractCegarLoop]: Abstraction has 4386 states and 5308 transitions. [2020-07-07 14:07:08,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:07:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5308 transitions. [2020-07-07 14:07:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-07 14:07:08,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:08,260 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:08,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:07:08,261 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:08,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:08,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1607368582, now seen corresponding path program 1 times [2020-07-07 14:07:08,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:08,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52763934] [2020-07-07 14:07:08,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:08,686 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:08,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52763934] [2020-07-07 14:07:08,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:08,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:07:08,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885721529] [2020-07-07 14:07:08,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:07:08,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:08,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:07:08,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:07:08,689 INFO L87 Difference]: Start difference. First operand 4386 states and 5308 transitions. Second operand 9 states. [2020-07-07 14:07:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:10,992 INFO L93 Difference]: Finished difference Result 8470 states and 10434 transitions. [2020-07-07 14:07:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 14:07:10,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 264 [2020-07-07 14:07:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:11,023 INFO L225 Difference]: With dead ends: 8470 [2020-07-07 14:07:11,024 INFO L226 Difference]: Without dead ends: 5371 [2020-07-07 14:07:11,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:07:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2020-07-07 14:07:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4412. [2020-07-07 14:07:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4412 states. [2020-07-07 14:07:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 5346 transitions. [2020-07-07 14:07:12,000 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 5346 transitions. Word has length 264 [2020-07-07 14:07:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:12,001 INFO L479 AbstractCegarLoop]: Abstraction has 4412 states and 5346 transitions. [2020-07-07 14:07:12,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:07:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 5346 transitions. [2020-07-07 14:07:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 14:07:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:12,011 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:12,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:07:12,012 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -424779163, now seen corresponding path program 1 times [2020-07-07 14:07:12,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:12,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825820768] [2020-07-07 14:07:12,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:12,293 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:12,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825820768] [2020-07-07 14:07:12,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:12,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:07:12,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625833016] [2020-07-07 14:07:12,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:07:12,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:07:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:07:12,296 INFO L87 Difference]: Start difference. First operand 4412 states and 5346 transitions. Second operand 9 states. [2020-07-07 14:07:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:14,336 INFO L93 Difference]: Finished difference Result 8530 states and 10535 transitions. [2020-07-07 14:07:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 14:07:14,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2020-07-07 14:07:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:14,367 INFO L225 Difference]: With dead ends: 8530 [2020-07-07 14:07:14,367 INFO L226 Difference]: Without dead ends: 5405 [2020-07-07 14:07:14,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:07:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-07-07 14:07:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 4416. [2020-07-07 14:07:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4416 states. [2020-07-07 14:07:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 5350 transitions. [2020-07-07 14:07:15,245 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 5350 transitions. Word has length 265 [2020-07-07 14:07:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:15,246 INFO L479 AbstractCegarLoop]: Abstraction has 4416 states and 5350 transitions. [2020-07-07 14:07:15,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:07:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 5350 transitions. [2020-07-07 14:07:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 14:07:15,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:15,253 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:15,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:07:15,254 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash -482037465, now seen corresponding path program 1 times [2020-07-07 14:07:15,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:15,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761157973] [2020-07-07 14:07:15,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:07:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:07:15,393 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:15,394 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 14:07:15,394 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 14:07:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 14:07:15,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:07:15 BoogieIcfgContainer [2020-07-07 14:07:15,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:07:15,431 INFO L168 Benchmark]: Toolchain (without parser) took 43479.75 ms. Allocated memory was 137.9 MB in the beginning and 1.1 GB in the end (delta: 928.0 MB). Free memory was 101.2 MB in the beginning and 732.5 MB in the end (delta: -631.3 MB). Peak memory consumption was 296.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,432 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.39 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 180.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,434 INFO L168 Benchmark]: Boogie Preprocessor took 44.76 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,434 INFO L168 Benchmark]: RCFGBuilder took 698.29 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 139.6 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,435 INFO L168 Benchmark]: TraceAbstraction took 42290.89 ms. Allocated memory was 202.4 MB in the beginning and 1.1 GB in the end (delta: 863.5 MB). Free memory was 139.0 MB in the beginning and 732.5 MB in the end (delta: -593.5 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. [2020-07-07 14:07:15,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.39 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 180.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.76 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 698.29 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 139.6 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42290.89 ms. Allocated memory was 202.4 MB in the beginning and 1.1 GB in the end (delta: 863.5 MB). Free memory was 139.0 MB in the beginning and 732.5 MB in the end (delta: -593.5 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int m_st ; [L17] int t1_st ; [L18] int m_i ; [L19] int t1_i ; [L20] int M_E = 2; [L21] int T1_E = 2; [L22] int E_M = 2; [L23] int E_1 = 2; [L27] int token ; [L29] int local ; [L475] int __retres1 ; [L479] CALL init_model() [L390] m_i = 1 [L391] t1_i = 1 [L479] RET init_model() [L480] CALL start_simulation() [L416] int kernel_st ; [L417] int tmp ; [L418] int tmp___0 ; [L422] kernel_st = 0 [L423] FCALL update_channels() [L424] CALL init_threads() [L172] COND TRUE m_i == 1 [L173] m_st = 0 [L177] COND TRUE t1_i == 1 [L178] t1_st = 0 [L424] RET init_threads() [L425] CALL fire_delta_events() [L261] COND FALSE !(M_E == 0) [L266] COND FALSE !(T1_E == 0) [L271] COND FALSE !(E_M == 0) [L276] COND FALSE !(E_1 == 0) [L425] RET fire_delta_events() [L426] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND FALSE !(t1_pc == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L426] RET activate_threads() [L427] CALL reset_delta_events() [L289] COND FALSE !(M_E == 1) [L294] COND FALSE !(T1_E == 1) [L299] COND FALSE !(E_M == 1) [L304] COND FALSE !(E_1 == 1) [L427] RET reset_delta_events() [L430] COND TRUE 1 [L433] kernel_st = 1 [L434] CALL eval() [L208] int tmp ; [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND FALSE !(\read(tmp_ndt_1)) [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND TRUE t1_pc == 0 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND TRUE m_pc == 0 [L45] COND TRUE 1 [L48] token = __VERIFIER_nondet_int() [L49] local = token [L50] E_1 = 1 [L51] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND TRUE E_1 == 1 [L147] __retres1 = 1 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND TRUE \read(tmp___0) [L330] t1_st = 0 [L343] RET activate_threads() [L51] RET immediate_notify() [L52] E_1 = 2 [L53] m_pc = 1 [L54] m_st = 2 [L228] RET master() [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND FALSE !(t1_pc == 0) [L93] COND TRUE t1_pc == 1 [L109] token += 1 [L110] E_M = 1 [L111] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND TRUE m_pc == 1 [L127] COND TRUE E_M == 1 [L128] __retres1 = 1 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND TRUE \read(tmp) [L322] m_st = 0 [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND FALSE !(E_1 == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L343] RET activate_threads() [L111] RET immediate_notify() [L112] E_M = 2 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND FALSE !(m_pc == 0) [L37] COND TRUE m_pc == 1 [L59] COND FALSE !(token != local + 1) [L64] COND TRUE tmp_var <= 5 [L65] COND TRUE tmp_var >= 5 [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L72] COND TRUE tmp_var == 5 [L73] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3199 SDtfs, 11953 SDslu, 1167 SDs, 0 SdLazy, 17832 SolverSat, 4135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 853 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4416occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 6241 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...