/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.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:50:56,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:50:56,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:50:56,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:50:56,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:50:56,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:50:56,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:50:56,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:50:56,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:50:56,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:50:56,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:50:56,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:50:56,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:50:56,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:50:56,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:50:56,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:50:56,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:50:56,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:50:56,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:50:56,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:50:56,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:50:56,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:50:56,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:50:56,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:50:56,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:50:56,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:50:56,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:50:56,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:50:56,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:50:56,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:50:56,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:50:56,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:50:56,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:50:56,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:50:56,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:50:56,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:50:56,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:50:56,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:50:56,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:50:56,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:50:56,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:50:56,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:50:56,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:50:56,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:50:56,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:50:56,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:50:56,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:50:56,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:50:56,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:50:56,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:50:56,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:50:56,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:50:56,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:50:56,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:50:56,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:50:56,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:50:56,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:50:56,455 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:50:56,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:50:56,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:50:56,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:56,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:50:56,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:50:56,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:50:56,456 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:50:56,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:50:56,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:50:56,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:50:56,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:50:56,773 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:50:56,773 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-22 19:50:56,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e3e286d/efdebf803fb345499ae4d835a98f188c/FLAG616891c14 [2020-08-22 19:50:57,394 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:50:57,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-08-22 19:50:57,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e3e286d/efdebf803fb345499ae4d835a98f188c/FLAG616891c14 [2020-08-22 19:50:57,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e3e286d/efdebf803fb345499ae4d835a98f188c [2020-08-22 19:50:57,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:50:57,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:50:57,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:57,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:50:57,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:50:57,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:57" (1/1) ... [2020-08-22 19:50:57,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c41f2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:57, skipping insertion in model container [2020-08-22 19:50:57,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:57" (1/1) ... [2020-08-22 19:50:57,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:50:57,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:50:58,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:58,050 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:50:58,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:58,212 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:50:58,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58 WrapperNode [2020-08-22 19:50:58,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:58,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:50:58,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:50:58,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:50:58,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... [2020-08-22 19:50:58,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:50:58,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:50:58,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:50:58,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:50:58,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 19:50:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 19:50:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 19:50:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 19:50:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 19:50:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 19:50:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 19:50:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:50:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 19:50:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:50:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 19:50:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 19:50:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-08-22 19:50:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 19:50:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 19:50:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:50:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:50:59,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:50:59,012 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 19:50:59,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:59 BoogieIcfgContainer [2020-08-22 19:50:59,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:50:59,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:50:59,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:50:59,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:50:59,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:50:57" (1/3) ... [2020-08-22 19:50:59,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d503172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:59, skipping insertion in model container [2020-08-22 19:50:59,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:58" (2/3) ... [2020-08-22 19:50:59,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d503172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:59, skipping insertion in model container [2020-08-22 19:50:59,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:59" (3/3) ... [2020-08-22 19:50:59,032 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-08-22 19:50:59,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:50:59,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:50:59,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:50:59,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:50:59,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:50:59,101 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:50:59,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:50:59,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:50:59,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:50:59,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:50:59,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:50:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-08-22 19:50:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 19:50:59,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:59,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:50:59,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:59,158 INFO L82 PathProgramCache]: Analyzing trace with hash 356343399, now seen corresponding path program 1 times [2020-08-22 19:50:59,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:59,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631702410] [2020-08-22 19:50:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:59,239 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:50:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:50:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:50:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:50:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:50:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:50:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:50:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:50:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:50:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:50:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:59,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631702410] [2020-08-22 19:50:59,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:59,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:50:59,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612104529] [2020-08-22 19:50:59,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:50:59,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:59,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:50:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:50:59,949 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 7 states. [2020-08-22 19:51:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:02,842 INFO L93 Difference]: Finished difference Result 1032 states and 1419 transitions. [2020-08-22 19:51:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:51:02,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-08-22 19:51:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:02,872 INFO L225 Difference]: With dead ends: 1032 [2020-08-22 19:51:02,872 INFO L226 Difference]: Without dead ends: 774 [2020-08-22 19:51:02,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:51:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-08-22 19:51:03,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 562. [2020-08-22 19:51:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-08-22 19:51:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 711 transitions. [2020-08-22 19:51:03,104 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 711 transitions. Word has length 134 [2020-08-22 19:51:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:03,108 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 711 transitions. [2020-08-22 19:51:03,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:51:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 711 transitions. [2020-08-22 19:51:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-22 19:51:03,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:03,135 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, 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] [2020-08-22 19:51:03,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:51:03,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1876371016, now seen corresponding path program 1 times [2020-08-22 19:51:03,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:03,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149134901] [2020-08-22 19:51:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:03,150 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-22 19:51:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 19:51:03,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149134901] [2020-08-22 19:51:03,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:03,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:03,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476533643] [2020-08-22 19:51:03,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:03,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:03,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:03,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:03,549 INFO L87 Difference]: Start difference. First operand 562 states and 711 transitions. Second operand 9 states. [2020-08-22 19:51:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:07,630 INFO L93 Difference]: Finished difference Result 2088 states and 2801 transitions. [2020-08-22 19:51:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 19:51:07,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-08-22 19:51:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:07,645 INFO L225 Difference]: With dead ends: 2088 [2020-08-22 19:51:07,645 INFO L226 Difference]: Without dead ends: 1575 [2020-08-22 19:51:07,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:51:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-08-22 19:51:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1143. [2020-08-22 19:51:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-22 19:51:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1495 transitions. [2020-08-22 19:51:07,848 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1495 transitions. Word has length 213 [2020-08-22 19:51:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:07,849 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1495 transitions. [2020-08-22 19:51:07,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:51:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1495 transitions. [2020-08-22 19:51:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-08-22 19:51:07,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:07,864 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, 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, 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] [2020-08-22 19:51:07,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:51:07,865 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1783560722, now seen corresponding path program 1 times [2020-08-22 19:51:07,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:07,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729605212] [2020-08-22 19:51:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:07,874 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 19:51:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 19:51:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 19:51:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 19:51:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 19:51:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 19:51:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-08-22 19:51:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-22 19:51:08,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729605212] [2020-08-22 19:51:08,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:08,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:08,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908108689] [2020-08-22 19:51:08,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:08,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:08,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:08,400 INFO L87 Difference]: Start difference. First operand 1143 states and 1495 transitions. Second operand 10 states. [2020-08-22 19:51:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:11,256 INFO L93 Difference]: Finished difference Result 2749 states and 3637 transitions. [2020-08-22 19:51:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 19:51:11,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 351 [2020-08-22 19:51:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:11,271 INFO L225 Difference]: With dead ends: 2749 [2020-08-22 19:51:11,271 INFO L226 Difference]: Without dead ends: 1653 [2020-08-22 19:51:11,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2020-08-22 19:51:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-08-22 19:51:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1131. [2020-08-22 19:51:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-08-22 19:51:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1476 transitions. [2020-08-22 19:51:11,458 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1476 transitions. Word has length 351 [2020-08-22 19:51:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:11,458 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1476 transitions. [2020-08-22 19:51:11,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1476 transitions. [2020-08-22 19:51:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-22 19:51:11,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:11,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:11,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:51:11,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1786251854, now seen corresponding path program 1 times [2020-08-22 19:51:11,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:11,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268722409] [2020-08-22 19:51:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:11,474 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 19:51:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 19:51:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-22 19:51:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 19:51:12,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268722409] [2020-08-22 19:51:12,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:12,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:51:12,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616838363] [2020-08-22 19:51:12,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:51:12,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:51:12,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:51:12,052 INFO L87 Difference]: Start difference. First operand 1131 states and 1476 transitions. Second operand 12 states. [2020-08-22 19:51:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:14,806 INFO L93 Difference]: Finished difference Result 2759 states and 3707 transitions. [2020-08-22 19:51:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:51:14,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 275 [2020-08-22 19:51:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:14,820 INFO L225 Difference]: With dead ends: 2759 [2020-08-22 19:51:14,820 INFO L226 Difference]: Without dead ends: 1334 [2020-08-22 19:51:14,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:51:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-08-22 19:51:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 924. [2020-08-22 19:51:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-22 19:51:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1166 transitions. [2020-08-22 19:51:15,040 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1166 transitions. Word has length 275 [2020-08-22 19:51:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:15,040 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1166 transitions. [2020-08-22 19:51:15,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:51:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1166 transitions. [2020-08-22 19:51:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-22 19:51:15,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:15,047 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:15,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:51:15,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:15,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1759472638, now seen corresponding path program 2 times [2020-08-22 19:51:15,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:15,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351968044] [2020-08-22 19:51:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:15,058 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 19:51:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 19:51:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:15,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351968044] [2020-08-22 19:51:15,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:15,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:15,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024540600] [2020-08-22 19:51:15,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:15,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:15,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:15,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:15,490 INFO L87 Difference]: Start difference. First operand 924 states and 1166 transitions. Second operand 10 states. [2020-08-22 19:51:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:19,746 INFO L93 Difference]: Finished difference Result 3431 states and 4638 transitions. [2020-08-22 19:51:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:51:19,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-08-22 19:51:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:19,764 INFO L225 Difference]: With dead ends: 3431 [2020-08-22 19:51:19,764 INFO L226 Difference]: Without dead ends: 2554 [2020-08-22 19:51:19,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:51:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-08-22 19:51:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1811. [2020-08-22 19:51:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-08-22 19:51:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2279 transitions. [2020-08-22 19:51:20,046 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2279 transitions. Word has length 274 [2020-08-22 19:51:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:20,046 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2279 transitions. [2020-08-22 19:51:20,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2279 transitions. [2020-08-22 19:51:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-22 19:51:20,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:20,052 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:20,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:51:20,053 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1933431879, now seen corresponding path program 1 times [2020-08-22 19:51:20,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:20,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303699057] [2020-08-22 19:51:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:20,059 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 19:51:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 19:51:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:20,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303699057] [2020-08-22 19:51:20,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:20,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:20,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689473148] [2020-08-22 19:51:20,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:20,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:20,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:20,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:20,588 INFO L87 Difference]: Start difference. First operand 1811 states and 2279 transitions. Second operand 10 states. [2020-08-22 19:51:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:24,860 INFO L93 Difference]: Finished difference Result 6312 states and 8446 transitions. [2020-08-22 19:51:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:51:24,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-08-22 19:51:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:24,889 INFO L225 Difference]: With dead ends: 6312 [2020-08-22 19:51:24,889 INFO L226 Difference]: Without dead ends: 4548 [2020-08-22 19:51:24,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:51:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2020-08-22 19:51:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 3449. [2020-08-22 19:51:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-08-22 19:51:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4307 transitions. [2020-08-22 19:51:25,530 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4307 transitions. Word has length 274 [2020-08-22 19:51:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:25,531 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 4307 transitions. [2020-08-22 19:51:25,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4307 transitions. [2020-08-22 19:51:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-08-22 19:51:25,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:25,545 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:25,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:51:25,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash 980135473, now seen corresponding path program 1 times [2020-08-22 19:51:25,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:25,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685971014] [2020-08-22 19:51:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:25,557 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:51:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 19:51:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 19:51:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 19:51:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 19:51:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 19:51:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 19:51:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 19:51:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 19:51:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-08-22 19:51:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-22 19:51:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-08-22 19:51:26,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685971014] [2020-08-22 19:51:26,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:26,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:26,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589145562] [2020-08-22 19:51:26,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:26,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:26,013 INFO L87 Difference]: Start difference. First operand 3449 states and 4307 transitions. Second operand 10 states. [2020-08-22 19:51:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:30,179 INFO L93 Difference]: Finished difference Result 8271 states and 10720 transitions. [2020-08-22 19:51:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 19:51:30,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 418 [2020-08-22 19:51:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:30,221 INFO L225 Difference]: With dead ends: 8271 [2020-08-22 19:51:30,221 INFO L226 Difference]: Without dead ends: 4870 [2020-08-22 19:51:30,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:51:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2020-08-22 19:51:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3453. [2020-08-22 19:51:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3453 states. [2020-08-22 19:51:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 4283 transitions. [2020-08-22 19:51:31,322 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 4283 transitions. Word has length 418 [2020-08-22 19:51:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:31,323 INFO L479 AbstractCegarLoop]: Abstraction has 3453 states and 4283 transitions. [2020-08-22 19:51:31,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 4283 transitions. [2020-08-22 19:51:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-08-22 19:51:31,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:31,339 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:31,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:51:31,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1319590809, now seen corresponding path program 1 times [2020-08-22 19:51:31,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:31,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742771139] [2020-08-22 19:51:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:31,358 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 19:51:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 19:51:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 19:51:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 19:51:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:32,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742771139] [2020-08-22 19:51:32,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:32,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:51:32,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983997687] [2020-08-22 19:51:32,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:51:32,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:51:32,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:51:32,047 INFO L87 Difference]: Start difference. First operand 3453 states and 4283 transitions. Second operand 11 states. [2020-08-22 19:51:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:38,494 INFO L93 Difference]: Finished difference Result 13187 states and 18026 transitions. [2020-08-22 19:51:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 19:51:38,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 304 [2020-08-22 19:51:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:38,561 INFO L225 Difference]: With dead ends: 13187 [2020-08-22 19:51:38,561 INFO L226 Difference]: Without dead ends: 9782 [2020-08-22 19:51:38,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 19:51:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2020-08-22 19:51:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 7023. [2020-08-22 19:51:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-08-22 19:51:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 8851 transitions. [2020-08-22 19:51:39,885 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 8851 transitions. Word has length 304 [2020-08-22 19:51:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:39,886 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 8851 transitions. [2020-08-22 19:51:39,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:51:39,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 8851 transitions. [2020-08-22 19:51:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-22 19:51:39,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:39,909 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:39,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:51:39,910 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 759375311, now seen corresponding path program 1 times [2020-08-22 19:51:39,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:39,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390621960] [2020-08-22 19:51:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:39,917 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 19:51:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 19:51:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 19:51:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-08-22 19:51:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:40,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390621960] [2020-08-22 19:51:40,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:40,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:40,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675272789] [2020-08-22 19:51:40,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:40,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:40,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:40,241 INFO L87 Difference]: Start difference. First operand 7023 states and 8851 transitions. Second operand 10 states. [2020-08-22 19:51:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:43,744 INFO L93 Difference]: Finished difference Result 14183 states and 18206 transitions. [2020-08-22 19:51:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:51:43,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2020-08-22 19:51:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:43,784 INFO L225 Difference]: With dead ends: 14183 [2020-08-22 19:51:43,784 INFO L226 Difference]: Without dead ends: 7206 [2020-08-22 19:51:43,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-08-22 19:51:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2020-08-22 19:51:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 5295. [2020-08-22 19:51:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5295 states. [2020-08-22 19:51:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 6650 transitions. [2020-08-22 19:51:44,552 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 6650 transitions. Word has length 305 [2020-08-22 19:51:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:44,552 INFO L479 AbstractCegarLoop]: Abstraction has 5295 states and 6650 transitions. [2020-08-22 19:51:44,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 6650 transitions. [2020-08-22 19:51:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-22 19:51:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:44,569 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, 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, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:44,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:51:44,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:44,570 INFO L82 PathProgramCache]: Analyzing trace with hash 551470748, now seen corresponding path program 1 times [2020-08-22 19:51:44,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:44,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109631748] [2020-08-22 19:51:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:44,577 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 19:51:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 19:51:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 19:51:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 19:51:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:51:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 19:51:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:45,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109631748] [2020-08-22 19:51:45,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:45,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:51:45,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637558289] [2020-08-22 19:51:45,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:51:45,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:45,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:51:45,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:51:45,210 INFO L87 Difference]: Start difference. First operand 5295 states and 6650 transitions. Second operand 14 states. [2020-08-22 19:51:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:53,551 INFO L93 Difference]: Finished difference Result 14043 states and 18694 transitions. [2020-08-22 19:51:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 19:51:53,551 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 310 [2020-08-22 19:51:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:53,598 INFO L225 Difference]: With dead ends: 14043 [2020-08-22 19:51:53,599 INFO L226 Difference]: Without dead ends: 8795 [2020-08-22 19:51:53,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=919, Invalid=2863, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 19:51:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2020-08-22 19:51:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 6474. [2020-08-22 19:51:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-08-22 19:51:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 7995 transitions. [2020-08-22 19:51:54,608 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 7995 transitions. Word has length 310 [2020-08-22 19:51:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:54,609 INFO L479 AbstractCegarLoop]: Abstraction has 6474 states and 7995 transitions. [2020-08-22 19:51:54,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:51:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 7995 transitions. [2020-08-22 19:51:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-22 19:51:54,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:54,624 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:54,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:51:54,625 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:54,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1101833629, now seen corresponding path program 1 times [2020-08-22 19:51:54,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:54,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110532776] [2020-08-22 19:51:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:54,633 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:51:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:51:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:51:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:51:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:51:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:51:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 19:51:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:51:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 19:51:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 19:51:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 19:51:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:51:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:51:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 19:51:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:54,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110532776] [2020-08-22 19:51:54,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:54,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:54,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479652333] [2020-08-22 19:51:54,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:54,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:54,939 INFO L87 Difference]: Start difference. First operand 6474 states and 7995 transitions. Second operand 9 states. [2020-08-22 19:52:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:00,852 INFO L93 Difference]: Finished difference Result 21783 states and 28598 transitions. [2020-08-22 19:52:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 19:52:00,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2020-08-22 19:52:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:00,928 INFO L225 Difference]: With dead ends: 21783 [2020-08-22 19:52:00,928 INFO L226 Difference]: Without dead ends: 15358 [2020-08-22 19:52:00,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:52:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2020-08-22 19:52:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 12334. [2020-08-22 19:52:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12334 states. [2020-08-22 19:52:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 15601 transitions. [2020-08-22 19:52:03,194 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 15601 transitions. Word has length 314 [2020-08-22 19:52:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:03,195 INFO L479 AbstractCegarLoop]: Abstraction has 12334 states and 15601 transitions. [2020-08-22 19:52:03,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:52:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 15601 transitions. [2020-08-22 19:52:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-22 19:52:03,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:03,218 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:03,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:52:03,218 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash 489071275, now seen corresponding path program 1 times [2020-08-22 19:52:03,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:03,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24365625] [2020-08-22 19:52:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:03,222 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 19:52:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 19:52:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 19:52:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-22 19:52:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 19:52:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:52:03,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24365625] [2020-08-22 19:52:03,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:03,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:52:03,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186847315] [2020-08-22 19:52:03,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:52:03,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:03,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:52:03,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:52:03,657 INFO L87 Difference]: Start difference. First operand 12334 states and 15601 transitions. Second operand 12 states. [2020-08-22 19:52:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:09,802 INFO L93 Difference]: Finished difference Result 25338 states and 33694 transitions. [2020-08-22 19:52:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 19:52:09,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 320 [2020-08-22 19:52:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:09,883 INFO L225 Difference]: With dead ends: 25338 [2020-08-22 19:52:09,883 INFO L226 Difference]: Without dead ends: 15813 [2020-08-22 19:52:09,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-08-22 19:52:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15813 states. [2020-08-22 19:52:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15813 to 12552. [2020-08-22 19:52:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12552 states. [2020-08-22 19:52:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 15503 transitions. [2020-08-22 19:52:12,140 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 15503 transitions. Word has length 320 [2020-08-22 19:52:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:12,141 INFO L479 AbstractCegarLoop]: Abstraction has 12552 states and 15503 transitions. [2020-08-22 19:52:12,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:52:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 15503 transitions. [2020-08-22 19:52:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-22 19:52:12,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:12,162 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:12,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 19:52:12,162 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:12,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1643690248, now seen corresponding path program 1 times [2020-08-22 19:52:12,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:12,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321281763] [2020-08-22 19:52:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:12,165 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 19:52:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 19:52:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 19:52:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-22 19:52:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 19:52:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:52:12,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321281763] [2020-08-22 19:52:12,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:12,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:52:12,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283132614] [2020-08-22 19:52:12,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:52:12,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:52:12,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:52:12,515 INFO L87 Difference]: Start difference. First operand 12552 states and 15503 transitions. Second operand 10 states. [2020-08-22 19:52:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:19,140 INFO L93 Difference]: Finished difference Result 33379 states and 43496 transitions. [2020-08-22 19:52:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:52:19,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 320 [2020-08-22 19:52:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:19,235 INFO L225 Difference]: With dead ends: 33379 [2020-08-22 19:52:19,236 INFO L226 Difference]: Without dead ends: 20883 [2020-08-22 19:52:19,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-08-22 19:52:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2020-08-22 19:52:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 17158. [2020-08-22 19:52:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17158 states. [2020-08-22 19:52:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17158 states to 17158 states and 20870 transitions. [2020-08-22 19:52:23,365 INFO L78 Accepts]: Start accepts. Automaton has 17158 states and 20870 transitions. Word has length 320 [2020-08-22 19:52:23,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:23,366 INFO L479 AbstractCegarLoop]: Abstraction has 17158 states and 20870 transitions. [2020-08-22 19:52:23,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:52:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 17158 states and 20870 transitions. [2020-08-22 19:52:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-22 19:52:23,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:23,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:23,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 19:52:23,390 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2057177026, now seen corresponding path program 1 times [2020-08-22 19:52:23,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:23,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966566331] [2020-08-22 19:52:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:23,394 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:52:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 19:52:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 19:52:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-08-22 19:52:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-22 19:52:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 19:52:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 19:52:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-22 19:52:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 19:52:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-22 19:52:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 19:52:23,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966566331] [2020-08-22 19:52:23,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:23,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:52:23,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246000928] [2020-08-22 19:52:23,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:52:23,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:23,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:52:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:52:23,758 INFO L87 Difference]: Start difference. First operand 17158 states and 20870 transitions. Second operand 12 states. [2020-08-22 19:52:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:28,216 INFO L93 Difference]: Finished difference Result 27583 states and 33394 transitions. [2020-08-22 19:52:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:52:28,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 335 [2020-08-22 19:52:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:28,276 INFO L225 Difference]: With dead ends: 27583 [2020-08-22 19:52:28,277 INFO L226 Difference]: Without dead ends: 10489 [2020-08-22 19:52:28,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:52:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10489 states. [2020-08-22 19:52:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10489 to 8415. [2020-08-22 19:52:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8415 states. [2020-08-22 19:52:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 9696 transitions. [2020-08-22 19:52:30,012 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 9696 transitions. Word has length 335 [2020-08-22 19:52:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:30,013 INFO L479 AbstractCegarLoop]: Abstraction has 8415 states and 9696 transitions. [2020-08-22 19:52:30,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:52:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 9696 transitions. [2020-08-22 19:52:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-08-22 19:52:30,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:30,021 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:30,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 19:52:30,021 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:30,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash 347748049, now seen corresponding path program 1 times [2020-08-22 19:52:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557738605] [2020-08-22 19:52:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:30,025 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:52:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 19:52:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 19:52:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 19:52:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 19:52:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 19:52:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 19:52:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 19:52:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-22 19:52:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 19:52:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-22 19:52:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 19:52:30,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557738605] [2020-08-22 19:52:30,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:30,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:52:30,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309831342] [2020-08-22 19:52:30,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:52:30,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:30,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:52:30,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:52:30,545 INFO L87 Difference]: Start difference. First operand 8415 states and 9696 transitions. Second operand 12 states. [2020-08-22 19:52:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:33,805 INFO L93 Difference]: Finished difference Result 12968 states and 14995 transitions. [2020-08-22 19:52:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:52:33,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 345 [2020-08-22 19:52:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:33,824 INFO L225 Difference]: With dead ends: 12968 [2020-08-22 19:52:33,824 INFO L226 Difference]: Without dead ends: 3861 [2020-08-22 19:52:33,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:52:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-08-22 19:52:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3226. [2020-08-22 19:52:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3226 states. [2020-08-22 19:52:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 3637 transitions. [2020-08-22 19:52:34,615 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 3637 transitions. Word has length 345 [2020-08-22 19:52:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:34,616 INFO L479 AbstractCegarLoop]: Abstraction has 3226 states and 3637 transitions. [2020-08-22 19:52:34,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:52:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 3637 transitions. [2020-08-22 19:52:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-08-22 19:52:34,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:34,621 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:34,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 19:52:34,621 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:34,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1543503057, now seen corresponding path program 1 times [2020-08-22 19:52:34,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:34,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221870199] [2020-08-22 19:52:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:34,626 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:52:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 19:52:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 19:52:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 19:52:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 19:52:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 19:52:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 19:52:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:52:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-22 19:52:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 19:52:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 19:52:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:52:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 19:52:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 19:52:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:52:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 19:52:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 19:52:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-22 19:52:35,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221870199] [2020-08-22 19:52:35,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:35,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:52:35,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926773875] [2020-08-22 19:52:35,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:52:35,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:52:35,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:52:35,230 INFO L87 Difference]: Start difference. First operand 3226 states and 3637 transitions. Second operand 14 states. [2020-08-22 19:52:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:38,446 INFO L93 Difference]: Finished difference Result 6713 states and 7928 transitions. [2020-08-22 19:52:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:52:38,447 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 502 [2020-08-22 19:52:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:38,465 INFO L225 Difference]: With dead ends: 6713 [2020-08-22 19:52:38,466 INFO L226 Difference]: Without dead ends: 3541 [2020-08-22 19:52:38,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 19:52:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-08-22 19:52:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3039. [2020-08-22 19:52:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-08-22 19:52:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3425 transitions. [2020-08-22 19:52:39,151 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3425 transitions. Word has length 502 [2020-08-22 19:52:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:39,151 INFO L479 AbstractCegarLoop]: Abstraction has 3039 states and 3425 transitions. [2020-08-22 19:52:39,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:52:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3425 transitions. [2020-08-22 19:52:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-08-22 19:52:39,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:39,156 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:39,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 19:52:39,156 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:39,157 INFO L82 PathProgramCache]: Analyzing trace with hash 581444211, now seen corresponding path program 1 times [2020-08-22 19:52:39,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:39,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099669289] [2020-08-22 19:52:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:39,161 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 19:52:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 19:52:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 19:52:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 19:52:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 19:52:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:52:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 19:52:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 19:52:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:52:40,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099669289] [2020-08-22 19:52:40,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:40,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:52:40,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220020766] [2020-08-22 19:52:40,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:52:40,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:40,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:52:40,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:52:40,246 INFO L87 Difference]: Start difference. First operand 3039 states and 3425 transitions. Second operand 14 states. [2020-08-22 19:52:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:50,450 INFO L93 Difference]: Finished difference Result 10848 states and 12572 transitions. [2020-08-22 19:52:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 19:52:50,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 388 [2020-08-22 19:52:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:50,473 INFO L225 Difference]: With dead ends: 10848 [2020-08-22 19:52:50,474 INFO L226 Difference]: Without dead ends: 8889 [2020-08-22 19:52:50,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=538, Invalid=2542, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 19:52:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2020-08-22 19:52:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 7530. [2020-08-22 19:52:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7530 states. [2020-08-22 19:52:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 8626 transitions. [2020-08-22 19:52:51,742 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 8626 transitions. Word has length 388 [2020-08-22 19:52:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:51,742 INFO L479 AbstractCegarLoop]: Abstraction has 7530 states and 8626 transitions. [2020-08-22 19:52:51,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:52:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 8626 transitions. [2020-08-22 19:52:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-08-22 19:52:51,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:51,748 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:51,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 19:52:51,749 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash -961418405, now seen corresponding path program 1 times [2020-08-22 19:52:51,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:51,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930513805] [2020-08-22 19:52:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:51,751 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 19:52:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 19:52:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 19:52:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 19:52:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 19:52:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:52:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 19:52:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 19:52:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:52:52,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930513805] [2020-08-22 19:52:52,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:52,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:52:52,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621172409] [2020-08-22 19:52:52,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:52:52,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:52:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:52:52,144 INFO L87 Difference]: Start difference. First operand 7530 states and 8626 transitions. Second operand 10 states. [2020-08-22 19:52:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:52:55,667 INFO L93 Difference]: Finished difference Result 12901 states and 14962 transitions. [2020-08-22 19:52:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 19:52:55,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 392 [2020-08-22 19:52:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:52:55,691 INFO L225 Difference]: With dead ends: 12901 [2020-08-22 19:52:55,691 INFO L226 Difference]: Without dead ends: 8682 [2020-08-22 19:52:55,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:52:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2020-08-22 19:52:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7569. [2020-08-22 19:52:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7569 states. [2020-08-22 19:52:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 8674 transitions. [2020-08-22 19:52:57,174 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 8674 transitions. Word has length 392 [2020-08-22 19:52:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:52:57,175 INFO L479 AbstractCegarLoop]: Abstraction has 7569 states and 8674 transitions. [2020-08-22 19:52:57,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:52:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 8674 transitions. [2020-08-22 19:52:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-08-22 19:52:57,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:52:57,181 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:52:57,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 19:52:57,181 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:52:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:52:57,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1547268291, now seen corresponding path program 1 times [2020-08-22 19:52:57,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:52:57,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623444839] [2020-08-22 19:52:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:52:57,184 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:52:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 19:52:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 19:52:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 19:52:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 19:52:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 19:52:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:52:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 19:52:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:52:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 19:52:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 19:52:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 19:52:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 19:52:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:52:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:52:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 19:52:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:52:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:52:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 19:52:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:52:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:52:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:52:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 19:52:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 19:52:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 19:52:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:52:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:52:57,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623444839] [2020-08-22 19:52:57,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:52:57,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:52:57,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898523528] [2020-08-22 19:52:57,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:52:57,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:52:57,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:52:57,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:52:57,586 INFO L87 Difference]: Start difference. First operand 7569 states and 8674 transitions. Second operand 10 states. [2020-08-22 19:53:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:53:01,023 INFO L93 Difference]: Finished difference Result 12982 states and 15070 transitions. [2020-08-22 19:53:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 19:53:01,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 393 [2020-08-22 19:53:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:53:01,049 INFO L225 Difference]: With dead ends: 12982 [2020-08-22 19:53:01,049 INFO L226 Difference]: Without dead ends: 8724 [2020-08-22 19:53:01,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:53:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2020-08-22 19:53:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 7575. [2020-08-22 19:53:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7575 states. [2020-08-22 19:53:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 8680 transitions. [2020-08-22 19:53:02,496 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 8680 transitions. Word has length 393 [2020-08-22 19:53:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:53:02,497 INFO L479 AbstractCegarLoop]: Abstraction has 7575 states and 8680 transitions. [2020-08-22 19:53:02,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:53:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 8680 transitions. [2020-08-22 19:53:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-08-22 19:53:02,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:53:02,503 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:53:02,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 19:53:02,503 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:53:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:53:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1490009989, now seen corresponding path program 1 times [2020-08-22 19:53:02,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:53:02,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204955757] [2020-08-22 19:53:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:53:02,506 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:53:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:53:02,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:53:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:53:02,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:53:02,733 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:53:02,733 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:53:02,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 19:53:02,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:53:02 BoogieIcfgContainer [2020-08-22 19:53:02,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:53:02,792 INFO L168 Benchmark]: Toolchain (without parser) took 125072.16 ms. Allocated memory was 138.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 103.1 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,798 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.60 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 179.8 MB in the end (delta: -77.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,803 INFO L168 Benchmark]: Boogie Preprocessor took 54.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,805 INFO L168 Benchmark]: RCFGBuilder took 753.85 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 131.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,806 INFO L168 Benchmark]: TraceAbstraction took 123763.27 ms. Allocated memory was 202.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.4 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-08-22 19:53:02,811 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 494.60 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 179.8 MB in the end (delta: -77.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 753.85 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 131.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 123763.27 ms. Allocated memory was 202.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.4 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. 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 t2_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int t2_st ; [L20] int m_i ; [L21] int t1_i ; [L22] int t2_i ; [L23] int M_E = 2; [L24] int T1_E = 2; [L25] int T2_E = 2; [L26] int E_M = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L33] int token ; [L35] int local ; [L600] int __retres1 ; [L604] CALL init_model() [L514] m_i = 1 [L515] t1_i = 1 [L516] t2_i = 1 [L604] RET init_model() [L605] CALL start_simulation() [L541] int kernel_st ; [L542] int tmp ; [L543] int tmp___0 ; [L547] kernel_st = 0 [L548] FCALL update_channels() [L549] CALL init_threads() [L233] COND TRUE m_i == 1 [L234] m_st = 0 [L238] COND TRUE t1_i == 1 [L239] t1_st = 0 [L243] COND TRUE t2_i == 1 [L244] t2_st = 0 [L549] RET init_threads() [L550] CALL fire_delta_events() [L346] COND FALSE !(M_E == 0) [L351] COND FALSE !(T1_E == 0) [L356] COND FALSE !(T2_E == 0) [L361] COND FALSE !(E_M == 0) [L366] COND FALSE !(E_1 == 0) [L371] COND FALSE !(E_2 == 0) [L550] RET fire_delta_events() [L551] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND FALSE !(t1_pc == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND FALSE !(t2_pc == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L551] RET activate_threads() [L552] CALL reset_delta_events() [L384] COND FALSE !(M_E == 1) [L389] COND FALSE !(T1_E == 1) [L394] COND FALSE !(T2_E == 1) [L399] COND FALSE !(E_M == 1) [L404] COND FALSE !(E_1 == 1) [L409] COND FALSE !(E_2 == 1) [L552] RET reset_delta_events() [L555] COND TRUE 1 [L558] kernel_st = 1 [L559] CALL eval() [L279] int tmp ; [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp_ndt_1)) [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND TRUE t1_pc == 0 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND TRUE t2_pc == 0 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND TRUE m_pc == 0 [L51] COND TRUE 1 [L54] token = __VERIFIER_nondet_int() [L55] local = token [L56] E_1 = 1 [L57] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND TRUE E_1 == 1 [L189] __retres1 = 1 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND TRUE \read(tmp___0) [L436] t1_st = 0 [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L57] RET immediate_notify() [L58] E_1 = 2 [L59] m_pc = 1 [L60] m_st = 2 [L299] RET master() [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND FALSE !(t1_pc == 0) [L99] COND TRUE t1_pc == 1 [L115] token += 1 [L116] E_2 = 1 [L117] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND FALSE !(E_M == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND TRUE E_2 == 1 [L208] __retres1 = 1 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND TRUE \read(tmp___1) [L444] t2_st = 0 [L457] RET activate_threads() [L117] RET immediate_notify() [L118] E_2 = 2 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND FALSE !(t2_pc == 0) [L135] COND TRUE t2_pc == 1 [L151] token += 1 [L152] E_M = 1 [L153] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND TRUE E_M == 1 [L170] __retres1 = 1 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND TRUE \read(tmp) [L428] m_st = 0 [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L153] RET immediate_notify() [L154] E_M = 2 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND FALSE !(m_pc == 0) [L43] COND TRUE m_pc == 1 [L65] COND FALSE !(token != local + 2) [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L76] COND TRUE tmp_var <= 5 [L77] COND TRUE tmp_var >= 5 [L78] COND TRUE tmp_var == 5 [L79] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 284 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 123.6s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 91.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6472 SDtfs, 33923 SDslu, 2366 SDs, 0 SdLazy, 36941 SolverSat, 9021 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1827 GetRequests, 1257 SyntacticMatches, 1 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4751 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17158occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 28668 StatesRemovedByMinimization, 19 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...